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Questions and Answers Archive
Statistics and Probability
October 2019
Statistics and Probability questions and answers in October 2019
University X has just installed a new copy machine in the library. The director of the library wants to know if the students are happy with it. Rather than surveying the entire population of students,...
A producer of light bulbs realizes that they are having quality problems: 30 percent of their light bulbs are defective. The quality management department decides that each day they are going to rando...
https://www.limes.one/Content/DataFiles/cars04.txt In what follows use any of the following tests/procedures: Regression, multiple regressions, confidence intervals, one-sided t-test or two-sided t-te...
https://www.limes.one/Content/DataFiles/Tornadoes.txt Upload the Tornadoes data, and make the histogram using (highlighting) all 12 columns for months and tornado numbers. Do not use annual tornadoe...
suppose P(A)= 40 and p(B/A) = 30. What is the joint probability of A and B?
1. Use Normal Approximation to Binomial to find the probability of at least 28 successes if the probability of success is 30% and the trial size is 80 3. For sampling proportion (or Normal to Binomial...
I am confused on what to use for the distributions comparisons. Would i use skewed?
You conduct a water quality survey in western Washington sampling 26 streams and rivers for total inorganic nitrogen and phosphorus concentrations (in
How is the (obs-exp)^2/exp being calculated? I keep getting drastically different answers when i plug in the values into the equation and i cant find how they are coming up with these answers. A theor...
I am confused how to begin answering this question. 4. ($6-Q18, p.274 in B&H) Use the MGF of the Geometric(p) distribution to give another proof that the mean of this distribution is 1/p and the v...
Construct the 95% confidence interval for the population mean using the appropriate distributions for the three situations below. a. A random sample of 50 people's body mass index has a mean of 27.7 a...
At a medium sized airport, mechanics need to replace tires on some of the airplanes each week because the tread on the tires is below the safe limit. You collected 36 weeks of data and observed that ...
You operate a game at an amusement park where people throw darts at balloons and try to win prizes. Players get to throw 5 darts. From prior experience, you know that the probability of success (pop...
You are interested in the number of English-speaking people on the planet who want to play a new kind of online video game. You asked 300 college students if they were interested in playing video gam...
Perform a hypothesis test on the data, using the field "carAge". Undergraduate Statistics Student Survey (n = 183, m = 20) Q1 Obs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2...
An Enrichment Program is a mandatory program for every student in a university, a survey is done to determine the student interest in Research Track, one of the tracks that could be chosen in Enrichme...
Perform a hypothesis test on the data, using the field "carAge". Undergraduate Statistics Student Survey (n = 183, m = 20) Q1 Obs 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2...
Use this information for the next three questions. You operate a game at an amusement park where people throw darts at balloons and try to win prizes. Players get to throw 5 darts. From prior experi...
Question 1 You are interested in the number of English-speaking people on the planet who want to play a new kind of online video game. You asked 300 college students if they were interested in playin...
the events A and B are mutually exclusive. Suppose P(A) = 30 and P(B)= 20. What is the probability of either A or B occuring ? what is the probability that neither A nor B will happen?
Question 1 You are interested in the number of English-speaking people on the planet who want to play a new kind of online video game. You asked 300 college students if they were interested in playin...
Joseph D'Amico is covered by Blue Cross and Medicare. His Blue Cross plan has an 85-15 coinsurance and a $100 deductible. This year's Medicare deductible is $110. He was seen in our office on January ...
3. At the 2019 US Open tennis tournament a statistician kept track of every serve. The statistician reported that the mean serve speed of Serena Williams was 95 miles per hour (mph) with a standard de...
Suppose that you and a friend are playing cards and decide to make a bet. If your friend draws two black cards in succession from a standard deck of 52 cards replacing the first card, you give him ...
Please help me understand Question 12 (Mandatory) (8 points) The results of sampling independent populations: sample 1 from population 1 mean 80 population variance 3 sample size 25 sample 2 from po...
Please explain how? Question 10 (Mandatory) [7 points) H0: u 5 16.6? vs. HA: |.1 > 16.67 What is the test statistic for sample of size 21, mean 13.33, and standard deviation 2.81? Enter the test st...
Need some help on the questions? STA 270 Applied Statistics - Fall 2019 Assignment Seven Due: Friday, November 1 Please write in complete sentences and show your work, if necessary. 1. Explain why the...
How do I answer this question? Using the 2 charts, credit card users.jpg and credit card users list.jpg, fill out the blanks.7 credit card companies randomly selected. The customers serviced was obser...
Statistics and Probability 3. Jethro's BBQ Food Truck. Jethro's BBQ is a local chain of restaurants located at central Iowa. Bruce... the owner of the restaurant located at Ames, is thinking about...
1. What is a strength and weakness of each when using data? MEAN MODE STANDARD DEVIATION INTERQUARTILE RANGE RANGE 2. How does you measure normally distributed central tendency? How about skewed?
Parameters: Data set must have a minimum of 500 records Data set must contain qualitative and quantitative data Data should be able to tell a story- or should be something that you can draw conclusion...
When you have a large sample size with 3 variables (debt, income, and geographical region) with a range of n=200 (1, 2, 3...200), how do you find: 1. Which type of data method is best to collect the...
someone help me to solve this. Let X1, ..., Xn be an iid sample with mean / and variance o2. The sample mean for n observations is, n Xn = n Xi. i=1 Show n My (t) = Mx
what is formula for percentage of the frequency (FREQ) responses from Male respondents 45 and under are 1s, 2s, etc.?
what is formula for percentage of the frequency (FREQ) responses from Male respondents 45 and under are 1s, 2s, etc.? Give your answers as percentages to two decimal places.
Worksheet - One-tailed or Two - tailed Hypotheses For the following items, indicate if it would be One-tailed or Two-Tailed Hypothesis and write both the null and alternative hypothesis of the study. ...
1.). What makes multiple logistic regression models useful? 2). A logistic regression model was run, looking at the association between gender (Independent Variable, male=0, female=1) and diabetes (D...
2. A random sample of 50 check out times at Corner Convenience store was obtained. The checkout time was recorded for each customer in the sample. Suppose the mean of the sample was 65 secon...
After reading about mean, median, mode and standard deviation and performing some base calculations, do you see any issues with these terms and their use in data analytics. How could these valuese di...
1. StatCrunch was used to construct the five number summary and boxplot below for the length of time, in consecutive hours, a baby sleeps at night for random sample of 25 six-month-old babies. Use the...
please also share explanations for each below 6. [6 Points We choose a random integer between 1 and 6, and then we (randomly ) choose a second integer that is either 0 or 1. What is the probability th...
Suppose 25% of large number of adults in a certain age group have hypertension. A random sample of 20 adults in this age group are selected. a) Calculate the probability that between three and seven, ...
Suppose X1 is the value on the upper face of one six-sided die, and X2 is the value on the upper face of a second six-sided die. The joint distribution of X1 and X2 is a full specification of the prob...
--------------------- The controls of an airplane have several backup systems or redundancies so that if one fails the plane will continue to operate. Suppose that the mechanism that controls the flap...
A researcher carefully computes the correlation coefficient between two variables and gets a r=1.23. What does this value mean? 2.A researcher wants to test the idea that show size and mathematical ab...
1.A visit to a hospital emergency room for something as simple as a sore throat could have a mean cost of $317. Assume that this cost is normally distributed with a standard deviation of $83. Wha...
Please, how can I read on the ANOVA table to determine the critical values? I find it difficult to make decisions
Statistics and Probability 3. Jethro's BBQ Food Truck. Jethro's BBQ is a local chain of restaurants located at central Iowa. Bruce, the owner of the restaurant located at Ames, is thinking about expan...
We know that the mean of a random variable that is a count and that is ~ B(n, p) is np and that the variance is np(1-p). Show that the mean of a sample proportion of successes is p and that the varian...
please explain and how to do it. Problem 3. If X is uniformly distributed over (-1, 3), find (a) P(IX| > 2) (b) The density function of the random variable |X
---------------------- A survey of middle-aged men reveals that 28% of them are balding at the crown of their heads. Moreover, it is known that such men have an 18% probability of suffering a heart at...
please explain and how to do it. Problem 5. The annual rainfall (in inches) in a certain region is normally distributed with u = 50 and or = 6. What is the probability that starting with this year, it...
We can reject the Null Hypothesis and state that we are at least 95% sure that there is a relationship between attending training and preferred source of ordering parts for the following data. True ...
The clerical staff in a law office has the following job performance scores: 25, 37, 38, 43, 44, 48, 51. If the mean level of performance for all clerical staff is 33.255, are those in this law offic...
One sample has n = 5 scores and the second has n = 10 scores. If the pooled variance for the two samples is 30, what is the value of the estimated standard error for the sample mean difference?
The probability distribution for the random variable x is as follow Student ID: Unit #4 Learning Activity Question # 1 The probability distribution for the random variable x is as follows. x 20 25 30 ...
Next week, Super Discount Airlines has a flight from New York to Los Angeles that will be booked to capacity. The airline knows from past history that an average of 34 customers (with a standard devia...
The following table provides a probability distribution for the random variable x dear is lic ase address BUSI 1013 BUSINESS STATISTICS 3. The following table provides a probability distribution for t...
We can reject the Null Hypothesis and state that we are at least 95% sure that there is a relationship between attending training and preferred source of ordering parts. True False
Dunstreet's Department Store would like to develop an inventory ordering policy of a 95 percent probability of not stocking out. To illustrate your recommended procedure, use as an example the orderin...
A popular resort hotel has 800 800 rooms and is usually fully booked. About 6 6% of the time a reservation is canceled before the 6:00 p.m. deadline with no penalty. What is the probability tha...
What is the pooled variance for the following two samples? Sample 1: n = 8 and SS = 168; Sample 2: n = 6 and SS = 120
A bank has kept records of the checking balances of its customers and determined that the average daily balance of its customers is $300 with a standard deviation of $48. A random sample of 144 checki...
Obtained statistic is -3.79 and table statistic is 2.10. Which of the following is the best concluding statement for this problem? 1. Since my obtained statistic of -3.79 is less than the table statis...
-------------------- a) b) Draw a probability tree to compute the joint probabilities from the following probabilities. P(A) = .5 P(B | A) = .4 P(AC ) = .2 P(B | AC ) = .7 Given the following probabil...
Which of the following is the best concluding statement for this problem? 1.Since my obtained statistic of -3.79 is less than the table statistic of 2.10, I cannot reject the null hypothesis. I am NOT...
In a research study, conducted by the National Institute of Health, 25 individuals were sampled measuring their triglyceride levels. If the distribution of triglyceride levels for 25 to 55 year old...
A movie company wants to test if there are movies that are preferred more by females and those preferred more by males. The movie company surveyed 20 men and 20 women and showed half of each sample a ...
please also share explanations for each below 2. [6 Points] A loaded die is observed and found to land with 1 face up 20% of the time, with 2 face up 10% of the time, with 3 face up 30% of the time, w...
Let ( Ω ,F, P) be the probability space where Ω = [0, 1], F be the Borel σ -field on [0, 1], and P be the uniform probability measure; that is for any 0 ≤ a < b...
If observations are not randomly sampled and independent of one another, what happens to ANCOVA? a. Exact results b. Inaccurate results c. Increased risk of error d. The sample size must be increased
University X has just installed a new copy machine in the library. The director of the library wants to know if the students are happy with it. Rather than surveying the entire population of students,...
Can't seem to figure out this question. I would appreciate any help provided. Thank you! 1. The probability density function of the random variable X is defined by f (x) = 3x2 0<x<1 0 elsewhere ...
Let us define the conditional variance in a similar way to the conditional expectation. a. What is the object Var (Y | X = x) (i.e. is it a number, a random variable or a function)? What does it repre...
The vice president for a company that installs monitored security systems has job satisfaction scores for those who monitor residential alarms. The mean job satisfaction score is 32.956 with a standar...
When the reorder point r exceeds Q *, the difference is a) safety stock b) one or more outstanding orders c) surplus inventory d) backorders
A lost tourist arrives at a point with 2 roads. The first road brings him back to the same point after 2 hours of walk. The last road leads to the city after 1 hour of walk. The tourist is determined ...
Let X be a fair dice roll, that is a sample from the uniform distribution in {1, 2,... , 6}. Let Y be the number of heads in X tosses of a fair coin, that is a coin which is landing heads with probabi...
I an not able to solve this questions. Please help me how to answer this type of questions. Thank you HOPEWELL HOSPITAL: Beds = 100 Bassinets = 10 DATE: April 30 Bed Starting Discharges Count Unit Cen...
1.A visit to a hospital emergency room for something as simple as a sore throat could have a mean cost of $312. Assume that this cost is normally distributed with a standard deviation of $96. If ...
Can someone help me solve b? I have z=1.45588 - trying to figure out with the z-score chart if I round this to 1.46 or if I treat it as 1.455 and split the difference between 1.45 and 1.46? A study fo...
Being tricky can be highly profitable, but giving away free cards can be dangerous. With just 22 players left in the 2015 WSOP Main Event, after an initial raise by John Allen Hinds, Neil Blumenfield ...
Professor Professorson and his colleagues are interested in determining if adolescents who play instructional game apps (such as word puzzles) on their smart phones show increased IQ scores compared t...
please answer a-d The amount of time adults spend watching television is closely monitored by firms because this helps to determine advertising pricing for commercials. Complete parts (a) through (d)....
help me find the z score please Find the z-score such that the area under the standard normal curve to the right is 0.29. The approximate z-score that corresponds to a right tail area of 0.29 is (Roun...
please help me solve the upper and lower bound Construct a 90% confidence interval of the population proportion using the given information. x = 240, n = 300 The lower bound is The upper bound is (Rou...
please answer a-e A random sample of 1006 adults in a certain large country was asked "Do you pretty much think televisions are a necessity or a luxury you could do without?" Of the 1006 adu...
Could you show me step by step for this problem. It would be nice if you can show me how to get E(X) and E(Y) too . The joint probability mass function (pmf) pX,y(x, y) for (X , Y) is given in the fol...
Hours Slept: 6 7.5 8 8.5 8.5 8.5 8.5 9 9 9 9 9.5 9.5 9.5 9.5 9.5 10 10 10 10 10 10 10.5 ?...
please answer a-d A researcher wishes to estimate the average blood alcohol concentration (BAC) for drivers involved in fatal accidents who are found to have positive BAC values. He randomly selects r...
please answer a-c Suppose a simple random sample of size n = 75 is obtained from a population whose size is N = 15,000 and whose population proportion with a specified characteristic is p = 0.4. (a) D...
please answer a-c A television sports commentator wants to estimate the proportion of citizens who "follow professional football." Complete parts (a) through (c). (a) What sample size should...
assume the random variable x is normally distributed with mean u=50 and standard deviation =4. find the 10th percentile Assume the random variable X is normally distributed, with mean p = 50 and stand...
please answer a and b The shape of the distribution of the time required to get an oil change at a 15-minute oil-change facility is unknown. However, records indicate that the mean time is 16.1 minute...
A random sample of 50 check out times at Corner Convenience store was obtained. The checkout time was recorded for each customer in the sample. Suppose the mean of the sample was 65 seconds and the st...
Please answer 4. Table 7.10 contains the measurements 6f the 61315 pieces . "nu __. produced after setup. Use the T test and the ﬁrst eight (by column) to determine if the run can commence. The...
Analysis of variance comparing two treatment conditions with a sample of n=11 participants in each treatment, SS total= 154, and MS between = 14. What is the value for the F-ratio? Need help solving. ...
Analysis of variance comparing three treatment conditions with a sample of n=10 participants in each treatment, SS between = 20, and F = 5.0. What is the value for SS total? Need help solving.
MAT 135 Module 2 Survey Project Data Collection examples?
Please answer question 13 a-f 13. Samples of size n = 4 are given: .314 .312 316 317 .313 .318 .315 .315 .314 .315 .312 .314 .315 .316 .315 .315 314 .316 .314 .312 a. Code the measurements using the b...
Based on the below are the test scores: 1. Complete the following ANOVA table using excel data output Source SS df MS ?...
A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 P....
Please show work 2 Let X be a random variable with a probability density function (pdf) f ( x ) = SC ( 1 - x 3 ) ) - 1 < x c 1 otherwise A, what is the value of [ that makes f( x) a pdf? B. What is...
Suppose the probability of someone wearing a pair of glasses among 5th graders is 26.5%. If there are 57 kids in a class, what will be the standard deviation of this distribution?
Please show work. Suppose A and Bare events in the Sample Space S. Suppose that P CA N B ) = 1 1/4, PCA) = 1/3 and PCB) = 314 A. Are Aand B independent Events? B. What is P (BIA)? C. Are A and B mutua...
please can you help me with this statistics question, just 6.7 only. thank you 120 Chapter 6 With what probability would the sample mean lie between 4. and 5.2 mmol/ly en a normally dictethered menula...
The data from an independent-measures research study produce a sample mean difference of 6 points and an estimated standard error of 2 points. If there are n = 8 scores in each sample, what is the val...
I am not able to solve this question. Someone can please help to solve this question. Thank you HOPEWELL HOSPITAL: Beds = 100 Bassinets = 10 DATE: April 30 Bed Unit Starting Transfers Discharges Count...
A local university reports that 3% of their students take their general education courses on a pass/fail basis. Assume that fifty students are registered for a general education course What is the pro...
The data from an independent-measures research study produce a sample mean difference of 6 points and an estimated standard error of 2 points. If there are n = 8 scores in each sample, what is the val...
How to find Standard Deviation when mean is 9 and the upper bound is 14, the lower bound is 4
Suppose scores on an exam were uniformly distributed between 50 and 100. Also suppose those who scored between a 75 and 83 earned a C on the exam. What percent earned a C?
Find critical value(s). a) What is the critical value for a right-tailed t-distribution test, where n=15 and ∝= 0.10.
5. Finally assume that busses arrive with non-constant rate function λ(t) per minute, where t > 0 denotes the time measured in minutes. (a) If λ(t) = 1 t , find the probability that the first bus...
One sample has n = 5 scores and the second has n = 10 scores. If the pooled variance for the two samples is 30, what is the value of the estimated standard error for the sample mean difference?
is a random variable with the probability function: f(x) = x/6 for x = 1,2 or 3 The expected value of x is Answer 2.333 Curious how to get the answer
aaaaaaaaaaaaaaaaaaaa The Paulson Company's year-end balance sheet is shown below. Its cost of common equity is 16%, its before-tax cost of debt is 12%, and its marginal tax rate is 25%. Assume that th...
AAAaaaaaaaaaaaaaaaaaaa Pearson Motors has a target capital structure of 30% debt and 70% common equity, with no preferred stock. The yield to maturity on the company's outstanding bonds is 9%, and i...
aaaaaaaaaaaaaaaaaaaaa Torch Industries can issue perpetual preferred stock at a price of $57.00 a share. The stock would pay a constant annual dividend of $6.00 a share. What is the company's cost of ...
Hello. BNAD question. A peach tree will bloom between March 18 and March 30. Assume the bloom time follows a continuous uniform distribution. What is the probablity it does not bloom until March 25th?...
Annual survey of computer crimes. The Computer Securi- ty Institute (CSI) conducts an annual survey of computer crime at United States businesses. CSI sends survey questionnaires to computer securit...
Ann is expected at 7:00 pm after an all-day drive. She may be as much as 1 h early or as much as 3 h late. Assuming that her arrival time X is uniformly distributed over that interval, find the pdf of...
If an independent-measures t statistic has df = 20, then a total of 18 individuals participated in the research study.
One sample has n = 5 scores and the second has n = 10 scores. If the pooled variance for the two samples is 30, what is the value of the estimated standard error for the sample mean difference?
Gregor Mendel is credited with discovering the genetic basis of inheritance. In his famous experiments with pea color, he expected that of 580 offspring plants, 75% would have green peas and 25% would...
pls show how you solved it 1) A recent survey revealed that an American's Christmas spending averaged $830. Use this as the population mean American's Christmas spending. Suppose Americans' Christmas ...
pls show work in detail or how you used calculator to solve it 1)The amount of bleach a machine pours into bottles has a mean of 36 oz. with a standard deviation of 0.15 oz. Suppose we take a random s...
A sample of 122 randomly selected students, found that the proportion of students planning to travel home for Thanksgiving is 0.77. What is the standard deviation of the sampling distribution? Round t...
Please show step by step: Use Normal Approximation to Binomial to find the z-score for at most 28 successes if the probability of success is 30% and the trial size is 80. What sample size do you nee...
1. A laboratory blood test is 95% effective in detecting a certain disease when it is, in fact, present. However, the test also yields a false positive result for 1% of the healthy person...
How would I find the answer? Could you list the steps/work to find the answer, thanks. 15-A courier service claims that only 10% of all of its deliveries arrive late. Assuming deliveries are independe...
How would I solve this question? Could you please list the steps/work involved. 47-The probability that a person catches a cold during the cold and flu season is 0.4. Assume that 10 people are chosen ...
Please help me solve this assignment. I'm so confused about it. These are my files, but I don't know why I cannot send the file to you. WPC 300 Car Manufacturer Homework Assignment A team charged with...
At the 2019 US Open tennis tournament a statistician kept track of every serve. The statistician reported that the mean serve speed of Serena Williams was 95 miles per hour (mph) with a standard devia...
Describe what happens to the mean, the standard deviation, and the shape of a distribution when all of the scores are transformed into z -scores.
Hours Slept: 6 7.5 8 8.5 8.5 8.5 8.5 9 9 9 9 9.5 9.5 9.5 9.5 9.5 10 10 10 10 10 10 10.5 ?...
1. It seems to you that fewer than half of people who are registered voters in the City of Madison do in fact vote when there is an election that is not for the president. You would like to know if th...
Based on observing the data and descriptive statistics, what do you think about the research question? Choose the best answer. 1.It appears that those who prefer autoparts.com have a much greater perc...
What is the difference in percentage of returned parts between those who prefer Autoparts.com and those who prefer using the standard auto parts manual? Which of the following is the best null hypothe...
Lost-time accidents occur in a company at a mean rate of 0.7 per day. What is the probability that the number of lost-time accidents occurring over a period of 9 days will be at least 5? Round your...
1. Consider the probability distribution for y y P ( y ) 0 0.81 1 0.18 2. 0.01 a. Find the E[ Y ] b. Find Var[ Y ].
Determine the signal to noise ratio for a process that has an average tensile strength of 1200 psi and a sample standard deviation of 160 psi derived from 6 samples?
A 1.5 dB change is equivalent to a percentage of? A 26%. B41%. C59% D100%
Please, can you help me with this question: Let X & Y have the joint probability function
The numbers of regular season wins for 10 football teams in a given season are given below. Determine the mean, variance, and standard deviation of the population data set. The range is 13. 2, 8...
what is the most direct result of standardizing the data collection process
multiple regression Problem 4. (Extra Credit) A student wants to predict a variable, Y, from two other vari- ables, X 1 and X2, using multiple regression. He deﬁnes a new variable X3 = X1 + X2 and u...
D20: Would it be more desirable for variability to be high or low for each of the following cases: Explain your decision. Weight of a bag of chips Scores on a college math placement test Length of a...
linear regression Problem 1. Suppose we ﬁt n data points with a line by minimizing RSS (least squares), and that we want to estimate the line at a new point, :30. Denoting its value on the line by n...
A research study was conducted to examine the impact of eating a high protein breakfast on adolescents' performance during a physical education physical fitness test. Half of the subjects received a h...
We can reject the Null Hypothesis and state that we are at least 95% sure that there is a relationship between attending training and preferred source of ordering parts. True False
Forty lots of silicon wafers have been delivered to AAA Electronics. The vendor has just informed you that 30% of the lots are bad as a result of metallic contamination. Fifteen lots have alre...
You are studying the water properties of a bog in eastern Wisconsin and wish to estimate its acidity. You dene a grid the covers the bog and pick 82 points from the grid at random. The mean acidity of...
Help please. The question is online and a picture is taken of the question. Bb Home X a SOLU X G probe x G Them X Norm X G find ti x 0 -4 X Norm X G norm: X static X G statist X Cours X + X C ecampus....
An automobile service facility specializing in engine tune-ups knows that 25% of tune-ups are done for four-cylinder engines, 40% for six-cylinder engines, and 35% for eight- cylinder engines. The fac...
29 old women with two kids. I have an annual income of 96,727 USD and including my income I have four variables USD Food, Transport, SE- Family, SE-Marital. Variables Selected: SE- Marital, Food, and ...
Suppose two fair dice are tossed. What is the probability the sum equals 4 given that this sum is less than 6? Please show work.
This is online course and the question is taken in the photo provided. Help please statistics and probability Bb Homew X Ya SOLUTI X G probabx G The me X Normal X G find the X 8-4 X Normal x G normal ...
Hi, can you please help with this question? I'm not sure how to think about this? 2. Copper A company which buys and sells copper has just lost most of their data. They come to you and ask: We only kn...
List up to six important assumption required to apply the M/M/s queueing model
How many sequences of 3 things can be formed from 8 different things with replacement and order is important?
Complete the following ANOVA summary table for two-factor fixed-effects ANOVA, where there are three levels of factor A (program) and two levels of factor B(gender). Each cell includes four students a...
questions 24 - 27 (d) Ho : / = 3.5 VS. Ha : / < 3.5 (e) Ho : u = 3.5 vs. Ha : u # 3.5 25. The test statistic is closest to: (a) t= -2.77 (b) t = -0.64 (c) t = 0.64 (d) t = 2.77 (e) t= 3.5 26. The r...
The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of six syringes taken from the batch. Suppose the bat...
hi this is my HW I need help Syracuse University - MySlice x | Assignments - 11920.1201 x [ WeBWork : MAT_221_Fall_201 x What is mu? - Definition from x C https://webwork.syr.edu/webwork2/MAT_221_Fall...
In a study to add a new feature to a software program, the programmer introduced two categories, men and women, in the survey she conducted. Is the study observational or experimental? If it is an ex...
An analysis of variance produces df between = 3 and df within = 24. If each treatment has the same number of participants, then how many participants are in each treatment? Need help solving. Thanks!
. A recent survey compared the costs of adoption through public and private agencies. For a sample of 16 adoptions through a public agency, the mean cost was $21,045, with a standard deviation of $835...
A United Nations report shows the mean family income for Mexican migrants to the United States is $27,000 per year. A FLOC (Farm Labor Organizing Committee) evaluation of 25 Mexican family units revea...
who was interest calculated? Pick up costs: Tractor Depreciation: 4hrs @ $2.74/hr = $10.96 Trailer Depreciation: 4 hrs. @ $0.57/hr = $2.28 Interest: Tractor:4 hrs @$3.25/hr = $13 Trailer: 4 hrs @ $.74...
Past surveys reveal that 30% of tourists going to Las Vegas to gamble spend more than $1,000. The Visitor's Bureau of Las Vegas wants to update this percentage. The new study is to use the 90% confide...
An important factor in selling a residential property is the number of people who look through the home. A sample of 15 homes recently sold in the Buffalo, New York area revealed the mean number looki...
. Fast Service Truck Lines uses the Ford Super Duty F-750 exclusively. Management made a study of the maintenance costs and determined the number of miles traveled during the year followed the normal ...
Y = Price in $'s for Tracfone service plan X1 = No. of minutes in plan X2 = No. of service days in plan (a) Write the equation in numerical form based on the MegaStat output below. (b) Evalua...
Using MINITAB, how do I answer Part a, and b. 7.138 Evaluating a measuring instrument. One way of evaluating a measuring instrument is to repeatedly measure the same METLAR item and compare the averag...
Inferential Statistics: Complete a hypothesis testing for the following Analyze the data to answer the following questions: What is the relationship between attending training in the use of Autopar...
I would like to know the steps to solve this problems. 1) When we sample from an infinite population, what happens to the standard error of the mean if the sample size is (a) increased from 3 to 27: (...
I am confused on how to find the z* and how to calculate the population standard deviation in these examples. 1. Confidence Interval Given. Assume I created a 95% confidence interval for the mean hour...
I would like to know how to do this problems 1) How many different samples of size 2 can be drawn from a finite population of size 8.4 (a) 4; (b) 6; (c) 12 (d) 18 (e) 400? 2) What is the probability o...
For a standard normal distribution, the probability of obtaining a z value between -1.9 to 1.7 is How do you calculate this without excel or a graph? (By hand)
Faculty: 2 3 1 0 1 2 4 3 3 2 1 Student:7 8 10 4 9 12 3 6 8 12 11 d. Apply the range rule of thumb to estimate the standard deviation of each of the two data sets. Briefly discuss why it does or does n...
Faculty: 2 3 1 0 1 2 4 3 3 2 1 Student:7 8 10 4 9 12 3 6 8 12 11 1. Give the five-number summary for faculty parking. Give the five-number summary for student parking. Find the standard deviat...
I am having trouble figuring out an example of difference between a small standard deviation and a large standard deviation.
A research study was conducted to examine the impact of eating a high protein breakfast on adolescents' performance during a physical education physical fitness test. Half of the subjects received a h...
Faculty: 2 3 1 0 1 2 4 3 3 2 1 Student:7 8 10 4 9 12 3 6 8 12 11 a. Find the mean, median, and range for each of the two data sets. Find the mean, median, and range for faculty parking. (Round...
9. The mean BMI for adults in France is 24.5. Suppose the BMI for adults in France is normally distributed with standard deviation 1.3. Suppose that 15 adults from France are selected at random. What ...
Now that we have defined hypotheses and a test statistic, we are ready to conduct a hypothesis test. We'll start by defining a function to simulate the test statistic under the null hypothesis, and t...
at the beginning of each year, a laboratory has to decide whether to order an antidote which expires in one year. if it orders in advance the price is $100. However, if it places an emergency order du...
What percentage of households has two children under the age of 5?
Use the theoretical method to determine the probability of the given outcome or event. Assume that the die is fair. Rolling a single six-sided die and getting a 2 or 4 The probability rolling a si...
what is the null and alternative hypothesis between smoking and anxiety
Draw a graph for the standard normal distribution. Label the horizontal axis at values of −3, −2, −1, 0, 1, 2, and 3. Use the table of probabilities for the standard normal distribution to ...
Which of the following class intervals has a width of 0.5, assuming data is recorded with one decimal place? a. 3.0-3.4 b. 3.5-4.0 c. 3.2-3.6 d. 3.1-3.4
What data must be included in the columns of a frequency table for nominal data? Group of answer choices frequency and percentage category and frequency category and percentage cumulative percentage
According to the South Dakota Department of Health, the number of hours of TV viewing per week is higher among adult women than adult men. A recent study showed women spent an average of 30 hours per ...
This exercise involves a complementary event. Find the probability of the given event. Assume that the deck is fair. Not drawing a queen queen from a standard deck of 52 playing cards The probability ...
For a standard normal distribution the probability of obtaining a Z value between -2.42 -2.0 is?
If there are 20 girls and 10 boys in a class, the ratio of boys to girls is calculated as: a. proportion b. ratio c. rate d. percentage
at a carnival entrance, tickets are assigned five digit numbers using the digits 0-9. If one ticket number is chosen randomly for a prize, what is the probability that every number on the ticket is ev...
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