Statistics and Probability questions and answers in October 2022

. Match the appropriate significance level, a, and degrees of freedom, df, to each graph. 1.812 -1.701 0 1,701 df = 10. a = 0.05 df = 28. a = 0.05 -1.701 -1.812 0 1.812 df = 10. a = 0.10 df = 28. a ...

. 4. (a) Write down the polar form of (3 + v3i) by using the principal argument. The general values of the argument are not required. (2 marks) (b) Hence, find the polar form of 3 + v12 + v3i by usi...

W 0. 19 0.26 0.31 0.47 0.61 0.64 0.65 0.66 0.73 0.88 Use the accompanying radiation levels in for 50 kg 0.88 0.88 0.89 0.90 0.93 0.96 0.98 1.02 1.08 1.11 different cell phones. Find the percentile P 2...

don't need to show work. just need answers for 14,15,16. Question 14 (1 point) A box containing 20 smarties has 8 yellow, 3 red, and 9 blue smarties. If 4 smarties are drawn out one at a time and not ...

I just need Chi squared and p value. Suppose a mutual fund qualifies as having moderate risk if the standard deviation of its monthly rate of return is less than 6%. A mutual-fund rating agency random...

don't need to show work. just need answers for 11,12,13. Question 11 (1 point) What is the expected outcome in a fair game? O 1 infinite Oo 100 Question 12 (1 point) In a coffee-shop promotion, when y...

In this Activity the Simulation feature in StatCrunch will be used to study probabilities when a pair of dice are rolled. Consider rolling a pair of 3-sided dice many times and adding up the 2 dice ea...

don't need to show work. just need answers for 7,8,9,10. Question 7 (1 point) In the game show "Deal or No Deal", a contestant is down to 3 cases: $50, $1000, and $250 000. What is the expec...

don't need to show work. just need answers for 4,5,6. Question 4 (1 point) Calculating the probability of the number of hearts when six cards are dealt is an example of a: binomial distribution geomet...

Please help me with this as best you can if you know how to use R. I have provided the data link as well as the question. Please solve it to your best with clear explanations so i can also give you th...

don't need to show work. just need answers for 1,2,3. Question 1 (1 point) A probability distribution shows the probabilities of all possible outcomes of an experiment. True False Question 2 (1 point)...

Stats question. The test statistic of z = 2.47 is obtained when testing the claim that p > 0.4. a. Identify the hypothesis test as being two-tailed, left-tailed, or right-tailed. b. Find the P-valu...

Christopher is a student and he is interested in knowing whether the nine Star Wars movies are equally popular on campus. He randomly surveys 882 students and gets the following results Movie Count Ep...

. 9, A statistically significant difference PROVES that the IV impacts the DV. True b. False 10. Keesia is working on her in-class stats assignment. Before entering her data for a set of credits com...

please see questions (b) - 68% of the bags will have between - 95% "" - 99.7 "" np= 22 nq = 198. Manufacturing companies strive to maintain production consistency, but it is often difficult for outsid...

. QUESTION TEN Find the deaviation mean (D.M) of the following data. Class 0-5 5-10 10-15 15-20 20-25 Frequ 3 5 12 6 4 ency

Stats question. The test statistic of z = - 3.46 is obtained when testing the claim that p = 1/2. a. Using a significance level of a = 0.10, find the critical value(s). b. Should we reject Ho or shoul...

You did not reject the null hypothesis. It is possible that you made a: Type l error X O Type | error or Type ll error Type ll error

please view below. Suppose that according to a recent census, the income per capita measured in U.S. dollars was $43,906 in country A and $47 493 in country B.Assume that income per capita is Normally...

Solve it correctly please. I ll rate with multiple votes. TYPED answer only. Show all work.

. 6.2.7 If (x1, .. ., xn) is a sample from a Beta(a, 1) distribution where a > 0 is unknown, then determine the MLE of a. you can express the pdf in a form that does not have gamma functions. (Wh...

Read the article by Lai et al. (2020) http://dx.doi.org/10.1136/bmjopen-2020-043828. The authors stated their research objectives under the Introduction section on page 2 of the article, and defined ...

Using the excel data, run 2 different simple linear regressions using price as the Y variable in each, and sqrft and lot size as the X variables. Which regression of the 2 do you think is 'best'? S...

please answer within the format by providing formula the detailed working Please provide answer in text (Without image) Please provide answer in text (Without image) Please provide answer in text (Wit...

Stats question. Use technology to find the P-value for the hypothesis test described below. The claim is that for 12 AM body temperatures, the mean is u > 98.6 F. The sample size is n = 6 and the t...

. Let X = [X], X2, X}] be a 3-dimensional vector of random varialbes that is uniformly distributed over the unit sphere. That is, fx (x) = for x2 + x3 + x251. Find the marginal PDF for one of the th...

Read either the article by Otte im Kampe et al. (2016) http://dx.doi.org/10.1136/bmjopen-2015-010399 or the article by Ghio et al. (2021) http://dx.doi.org/10.1136/bmjopen-2021-048750, then commen...

Suppose you want to research whether exam performance differed based on test anxiety levels among students. Your variables are exam performance on a scale of 0 - 100 points; and test anxiety levels, w...

For the following dataset, find the sample mean, median, mode, sample standard deviation, range, Q1, Q3, IQR: 30, 35, 27, 42, 50, 26, 23, 47, 23, 29, 41, 45, 21, 50, 47, 24, 26 Use the following...

The weight of cats is normally distributed. Suppose the average weight of an adult cat is 9 pounds with a standard deviation of 1.5 pounds. What percentage of cats weight between 6 and 12 pounds? Ente...

The weight of people in a small town in Missouri is known to be normally distributed with a mean of 186 pounds and a standard deviation of 29 pounds. On a raft that takes people across the river, a si...

Some research suggests that boot camp participants recidivate more than those who don't participate in boot camp. However, other research suggests that non-boot camp participants recidivate more than ...

(b) which products sold more in 2021 than in 2020? Check all that apply.

. Let X = [X1, X2, X,]T be a 3-dimensional vector of random varialbes that is uniformly distributed over the unit sphere. That is, fx(x) = > for 12 + x3+ 1251. Find the marginal PDF for a subset ...

TrueFun Entertainment sells four types of products: video games, CDs, radios, and DVDs. The numbers sold for 2020 and 2021 are shown in the double bar graph below. Use this graph to answer the questio...

Any help would be appreciated. TIA Provide a brief analysis and conclusions drawn about this ANOVA. Analyze the limitations of the statistical test and/or possible alternative explanations for your re...

Select an appropriate statistical method for the following research question (select all that apply): Is there a difference in appointment wait times for US military veterans when referred to either a...

. A child has placed 9 blocks in a row.. The blocks are of two different types, two of type A and 7 of type B. The blocks of type A are supposed to be placed in the first 2 spots but since they are ...

John is playing a game with two urns that look identical. The first urn has 4 green marbles and 2 blue marbles, and the second urn has 3 green marbles and 3 blue marbles. John will draw a marble from ...

. Here is a data set (n = 117) that has been sorted. 57.6 59.3 61.4 63.3 63.5 64.1 64.7 66.1 66.3 66.9 67 69.4 69.9 71.4 71.9 72.4 72.4 73.1 73.2 73.2 73.5 73.6 73.7 74.1 74.1 74.4 74.5 ...

No software output is required for this assignment. 1. 6.58 Multiple-choice questions on Advanced Placement exams have five options: A, B, C, D, and E. A random sample of the correct choice on 400 mul...

2. 6.148 Metal Tags on Penguins and Survival Data were collected over a 10-year timespan from a sample of 100 penguins that were randomly given either metal or electronic tags. One variable examined i...

Among fatal plane crashes that occurred during the past 50 years, 434 were due to pilot error, 64 were due to other human error, 197 were due to weather, 634 wore due to mechanical problems, and 670 w...

. Here is a sample data set. 240.8 244.9 270 288.9 294.7 297 305.7 305.9 308.6 313.3 321.4 340 341.1 341.1 341.1 342.5 359.6 371.7 376 376.4 376.5 379.8 382.7 388.5 389.5 391.9 397.6 397.6 398...

5) Let X represent the number of people in a household in the United States in 2021. X 1 2 3 4 5 6 7 or more P(x) 0.29 0.35 0.15 0.12 0.06 0.02 0.01 a) Find P(3) b) Find P(More than 4). c) Find the pr...

A 10 character sequence is generated by a random computer. Each character is selected independently and uniformly at random from the set of all letters (both capital and lower case) and numbers. That ...

Consider a continuous-time Markov chain on I = {1, 2, 3, 4} such that (1) the holding time of any i ∈ I is exponential with parameter i, and (2) at the end of the holding time, the Markov chain jump...

. Here is a sample data set (n = 48) that is nearly normal with two outliers (as can be seen in the histogram provided after the data set). 42.3 48.6 53.3 58.1 64.3 68.4 70.7 78.4 57.6 63.5 62...

Jonathan does exactly 9 different DoorDash orders. For each order, there is a 86% probability that he gets a $10 tip. What is the variance of the resulting payout?

. Find the value of z if the area under a standard normal curve (a) to the right of z is 0.3745; (b) to the left of z is 0.1038; (c) between 0 and z, with z > 0, is 0.4834; and (d) between - z an...

Let X be a non-negative random variable and Y also be a non-negative random variable. Assuming the random variables X and Y are independent, prove X 2 ⊥ Y 2 .

1. What is the PSS intended to measure? Has the scale been validated? 2. What is the GAS intended to measure? Has the scale been validated? 3. Select the worst item you can find from the PSS or the GA...

Consider two independent random variables X and Y. Given that Var[X]=3.8 and Var[Y]=7.7, compute the standard the deviation of 4X + 3Y.

The weight of cats is normally distributed. Suppose the average weight of an adult cat is 9 pounds with a standard deviation of 1.5 pounds. Approximately what percentage of cats weight between 7.5 and...

Suppose you have an observation of -8 taken from a normal distribution with a mean of 4 and a standard deviation of 3. What is the standard score? 0 4 O -2 OO O -4 O 2

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 43 for a sample of size 28 and standard deviation ...

This demonstration problem is intended to supplement §2.3 of Lomax & Hahs-Vaughn (3 rd ed.). However, it provides a general & concise introduction to obtaining percentile estimates from Gro...

. Assignment Scoring Your best submission for each question part is used for your score. 9. [-/0.6 Points] DETAILS AUFEXC4 13.2.019. 0/100 Submissions Used MY NOTES ASK YOUR TEACHER A survey of 10 f...

Suppose you have an observation of 7 taken from a normal distribution with a mean of 4 and a standard deviation of 3. What is the standard score? O 1 OO O 2 O -1 0 3

Identify the lower class limits, upper class limits, Age (yr) when class width, class midpoints, and class boundaries for award was won Frequency the given frequency distribution. Also identify the 20...

6. The average weight of men in the United States, aged 20 years or older, is 183.8 pounds and the standard deviation is 31.3 pounds. a) Calculate the z score for a man in the United States who weighs...

A frequency table of grades has five classes (A, B, C, D, F) with frequencies of 3, 10, 18, 5, and 1 ( respectively. Using percentages, what are the relative frequencies of the five classes? Complete ...

A regional quality inspector has 16 properties she must visit next month. The driving time from one property to the next is proportional to the straight-line distance between the properties. The X and...

. K The distribution of white blood cell count per cubic millimeter of whole blood is approximately Normal with mean 7475 and standard deviation 1750. Use a technology or a table to answer parts a t...

. (a) The graph shows a Standard Normal Distribution. You are given 1 or 2 z-score(s) and need to shade the area (=probability) corresponding to: P( — 0.5...

A health care provider claims that the mean overpayment on claims from an insurance company was 0. The insurance company is skeptical, believing that they were overcharged. They want to use sample dat...

N(t) A compound Poisson pro...

Statistics in CJ Hypothesis testing is the process used to evaluate the strength of evidence from the sample and provides a framework for making determinations related to the population. 1. What are...

STATISTICS in CJ: 1. What is the purpose of a test of significance? What, for instance, does p value of .05 indicate? 2. "Caveat emptor"—what are some suggestions for consumers of statistical find...

Assume that a sample is used to estimate a population mean /. Find the margin of error (M.O.E.) that corresponds to a sample of size 22 with a mean of 19.1 and a standard deviation of 17.4 at a confid...

. Quantitative SAT scores are approximately Normally distributed with a mean of 500 and a standard deviation of 100. On the horizontal axis of the graph, indicate the SAT scores that correspond with...

. 4) During the 2014-2015 season, goalie Jimmy Howard of the Detroit Red Wings had the following save percentages for the first 10 games: 94.1 88.5 94.9 95.8 94.4 88.5 92.6 93.3 90.5 93.5 a) Find th...

Let '1'], . .. =Tn he iid PoissonUk]. Recall that the MLE for A is 1 2 Ta. (a) Findnthe Fisher information and conﬁrm that the asymptotic variance for E is exactly Varﬂ] (which is not generally ...

. 1) The dotplot below shows the number of points scored by NBA player Tim Duncan in his 81 regular season games during the 2002-2003 season. Is the standard deviation closest to 2, 7, or 15? Explai...

Match the histograms to the summary statistics given. Standard Mean Median Deviation 59 59 19 66 66 9 III 59 59 12 IV 59 59 22 20 O 10- Frequency 10 Frequency 5- 54 56 58 60 62 64 1 19 39 59 79 99 119...

Only typing farmet answer please . A new technology for the production of integrated circuits is being mastered. The technology will be rejected if the percentage of the defective integrated circuits...

Customers leave a supermarket according to a Poisson process with rate λ per hour. Each customer buys a veggie platter with probability p, independent of everything else. (1) Find the distribution of...

You flip a coin 3 times. The sample space is {HHH, HHT, HTH, THH, HTT, THT, TTH, TTT}. Which of the following is a compound event? You get exactly 3 heads You get exactly 3 tails You get exactly 2 hea...

A test statistic calculation results in a value of z = 1.645. a) Draw a standard normal curve and shade the area that corresponds to the p-value for a two-tailed test b) Identify the part of the...

Suppose that property taxes on homes in Iowa City, Iowa, have an approximately normal distribution with a mean of $4500 and a standard deviation of $1700. - What proportion of the property taxes exc...

. F X Remaining Time: 1 hour, 59 minutes, 21 seconds. Question Completion Status: QUESTION 8 Given the following discrete distribution, answer the following questions. Round to 3 decimal places. x 0...

The five number summary of a dataset was found to be: 0, 7, 12, 17, 20 An observation is considered an outlier if it is below: An observation is considered an outlier if it is above:

. HW. Introduction to Statistics Assignment MATH 115 (C Tram) Fan 2022, sackam CO2 (actumanin, Fan 7072 1 Hemensign log Consider the following. 23, 15, 8, 6, 5, 21 compute the population standard de...

(e) No rule for assigning probabilities is violated here 3. Assume that variable X is normally distributed with a mean of 100 and a standard deviation of 6. Find the following probabilities: (a) P(X 2...

. Part IV. [Instruction: You MUST show your work. Otherwise, you will get zero points even if your answer is correct.] (30 pts.) Paula Johnson works for a foundation devoted to malaria eradication i...

The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on average, the reduction in systolic blood pressure is 30.6 for a sample of size 850 and standard deviati...

Express the confidence interval (176.7, 442.9) in the form of * + MOE. i + MOE = Submit Question

Assume that a sample is used to estimate a population mean /. Find the margin of error (M.O.E. ) that corresponds to a sample of size 22 with a mean of 19.1 and a standard deviation of 17.4 at a confi...

The mean of 12 numbers is 50. Removing one of the numbers causes the mean to decrease to 43. What number was removed?

You intend to estimate a population mean with a confidence interval. You believe the population to have a normal distribution. Your sample size is 4. Use the t-table to find the t-critical value that ...

. 4. Refer to the following for this question. S2(HH)=24 S1 (HH)=$1 (HT)=15 S2(HT)= 9 So=10 S1 (TH)=S1(TT)=5 S2(TH)=12 S2 (TT)=2 With P({ HH }) = 0.2, P({HT}) = 0.15, P({TH }) = 0.3, P({TT} ) = 0.35...

The mean of a distribution is 63 and the standard deviation is 4. Use Chebyshev's Theorem to find the minimum percentage of the values that fall between 51 and 75.

. A bag contains 15 apples, 4 of which are rotten. Two apples are taken out of the bag at random, without replacement. What is the probability that both apples are rotten? O A. 16 225 O B. 2 35 O C....

. According to her doctor, Mrs. James's cholesterol level is higher than only 5% of the females aged 50 and over. The cholesterol levels among females aged 50 mg mg and over are approximately normal...

. Ryan works for NASA designing planetary rovers. For his current project, he has to design a rover capable of withstanding the harsh climate on the surface of Venus. As part of his design work, Rya...

A bucket contains 3 red balls, 4 yellow balls, and 5 purple balls. One ball is taken from the bucket and is not replaced. Another ball is taken from the bucket. What is the probability that the firs...

. John wants to meet a friend in the city today and is going to take the train. It is known that if the weather is fine, only 2% of trains run late, but if it is raining, then 10% of trains run late...

. Suppose that the annual rate of return for a common biotechnology stock is normally distributed with a mean of 5.5% and a standard deviation of 5%. Find the probability that the one-year return of...

Hi i need answers to these questions asap. Thank you in advance. (ii) In how many ways can her hand of 5 cards contain at least three ace cards? Answer: [1 mark] c) Let G be the amount Kim gains by pl...

. Suppose Z follows the standard normal distribution. Use the calculator provided, or this table, to determine the value of c so that the following is true. P(Z > c) = 0.8078 Round your answer to...

An analyst at a local bank wonders if the age distribution of customers coming for service at his branch in town is the same as at a branch located near the mall. He selects 100 transactions at rand...

Hi need answers to these questions asap, Thank you in advance . 25 people who work in an ofﬁce are surveyed about the mode of transport they use to get to work. It was found that 10 people use bot...

Describe one pro and one con for using a graph or chart. Then, share an example of a time when a data visualization (like a graph or chart) changed your mind about something or gave you a deeper under...

. A. 25- 270- 25- 270% SO SOs Wins Wins 90- 5-6 90 270 270 SOs Wins Wins SOs The slope of the scatterplot is b. Use linear regression to find the equation of the best-fit line. 10 - X Pitching Stati...

. Answer the following. (a) The standard normal curve is graphed below. Shade the region under the standard normal curve to the left of z = 0.00. 0.4- 0.3- X 5 0.2-+ (b) Use this table or the ALEKS ...

. 1 fx, Y (x, y) = ay 041cy=3 otherwise O 1 frix=2(3) = 32 1<y<3 10 otherwise O frix=2(y) = 163 1 7 -2 0 otherwise O fix-2(3) = 10 otherwise O There is an error with the provided joint pdf suc...

. 400 400 400 200 Millionaires Millionaires 200 200- Millionaire 100 200 100 200 100 200 Population -X C. Data table The (R State Millionaires Population Be careful with the 85 35 18 7 hundred thous...

. A real number between 2 and 7 will be picked according to the probability distribution shown in the figure. Regions under the curve are labeled with A, B, and C. The area of each region is shown i...

The null hypothesis for a two sample t-test asserts that the population means for two groups are not equal. True or False?

. The manufacturer of a fertilizer guarantees that, with the aid of the fertilizer, 80% of planted seeds will germinate. Suppose the manufacturer is correct. If 10 seeds planted with the fertilizer ...

. below. O A. O B O C. 10- 10 Time (hours) Time (hours) Time (hours) 3.5 3.5 3.5 Distance (1000s of mi) Distance (1000s of mi) Distance (1000s of mi) Does it seem that the trend is linear, or is the...

The following scores represent the final examination grades of the elementary statistics course: 23 60 79 32 57 74 52 70 82 36 80 77 81 95 41 65 92 85 55 76 52 10 64 75 78 25 80 98 81 67 41 71 83 ...

. What fraction of the terms in a normal distribution have z-scores between -2.41 and -.39? A. .5129 O B. 2.8 O C. .3403 D. .6437 O E. 2.02

4 points Save A Suppose you must establish regulations concerning the maximum number of people who can occupy an elevator. A study of elevator occupancies indicates that, if eight people occupy the el...

. Suppose that 45% of all babies born in a particular hospital are girls. If 7 babies born in the hospital are randomly selected, what is the probability that at least 2 of them are girls? Car...

i want to ha ve a step by step answer. 5. Let 0 with probability -, X. = 2n with probability ?. (a) Does X, converge to zero in probability? (b) Does X, converge to zero in distribution?

. Kaitlin has a bag with 8 balls numbered 1 through 8. She is playing a game of chance. This game is this: Kaitlin chooses one ball from the bag at random. She wins $1 if the number 1 is selected, $...

. Let X be a random variable with the following probability distribution. Value x of X P (X=x) -2 0.40 - 1 0.30 0 0.05 1 0.20 2 0.05 Complete the following. (If necessary, consult a list of formulas...

. The accompanying scatterplot shows the median weekly earnings (by quarter) for men and women in a country for the years from 2005 through 2017. The correlation is 0.982. Complete parts (a) through...

. Fill in the P{X=X) values to give a legitimate probability distribution for the discrete random variable X, whose possible values are —l, 1, 3, 4, and 6. Value I ofX P{.1'= x) _1 0.26 1 3 4 0.1?...

Find the sample standard deviation for the following data. 5 7 9 3 1

. Share your research interest. What types of statistical analysis covered thus far would you conduct on your data and why! Include correlation and regression in your response The APA citation to wo...

Two draws are made at random without replacement from a deck of cards.Let A be the outcome that the first card is a four, and let B be the outcome that the second card is red.True or false? A and B ar...

A company is willing to renew its advertising contract with a local radio station only if the station can prove that more than 20% of the residents of the city have heard the ad and recognize the comp...

The Thai trial, the largest HIV vaccine trial in history, took place over 3 years from 2003 to 2006. The trial recruited more than 16,000 volunteers in Thailand aged 18 to 30 and was designed to test ...

All questions are based on this article: Heymann D, Stern Y, Cosentino S, Tatarina-Nulman O, Dorrejo JN, Gu Y. The Association Between Alcohol Use and the Progression of Alzheimer's Disease.pdf Downlo...

We pick a random point in a uniform disk. What is its expected distance to the center of the disk?

. Sampling Data & Statistics 12 13 15 For this activity. you will collect data with a minimum sample size of 3D for a variable that is measured numerically. You will need to include a descriptio...

. 7. One way to increase the power of a study is to increase the sample size. True O False D Question 8 1 pts 8. Data obtained from a sample of 20 individuals are likely to be normally distributed. ...

. The equation below estimates the effect of race on the probability of mortgage denial, holding constant the payment-to-income ratio. Pr(deny= 1 |P/I ratio, black) = <1>( — 2.23 + 2.73P/I r...

. A student has studied a sample of 150.000 recently released convicts from 550 medium security penitentiaries across all the 50 states in the U.S., in the last year. These convicts had similar inco...

Discrete Probability Distributions Binomial Probability Distributions Random variable Step 2 List two examples where there would be using discrete probability distributions to determine the expected r...

Find the sample variance for the following data. 5 7 9 3 1

Hello, I got these questions wrong. I need help understanding these problems.. What is the probability that a guess on one true/false question will be incorrect? The probability that a guess on one tr...

Instructions: Suppose a miniature golf player sinks a hole-in-one about 12% of the time on any given hole and is going to play 8 games at 18 holes each. Part A: Design a simulation. (Individual work) ...

Please help. 3. Calculate the overall reliability of the system shown below to two significant figures given the individual component reliabilities and assuming that failure of any component does not ...

. Akiko, owner of a fresh fish store, purchases fish daily. As a result, he needs to purchase the right amount of salmon so to minimize his loss. He estimates his average daily consumption need is 1...

On a reading test, Shaylen's score of 455 was higher than the scores of 4236 of the 7248 students who took the test. Find the percentile, rounded to the nearest percent, for Shaylen's score.

Just need help solving question B!. You are interested in finding a 98% confidence interval for the average number of days of class that college students miss each year. The data below show the number...

Consider the following first 12 lags of sample PACF and some Information Criteria for a series of monthly stock returns from 01/1926 to 12/2008. Using the 5% significant level, please identify the ord...

X is a random variable, E(X) = 6 and Var(X) = 2. Given this information, find: E ( 2 X − 6 )

What's a real-life example of a significance test that was found to be statistically significant but may not have had any practical significance? Clearly explain the difference between the two in the ...

1. Consider a game in which a fair die is rolled. If the die comes up 1, the player wins $5. If the die comes up 2 or 3, the player wins $2. For all other outcomes, the player loses $2. What is the ex...

A distribution of its normally distributed with mean 760 and stdev of 30 Use statcrunch to answer this question note that only a statcrunch output is acceptable Find the percent of the population be...

There are 500 deer in a wildlife preserve. A sample of 50 deer are caught and tagged and returned to the population. Suppose that 20 deer are caught. (a) Find the mean and standard deviation of th...

Complete the following table: Source SS df MS F Between 1 20 Within 36 Total 56 19 What is the SS between ?

part A and B only . Interval A biologist watches fish swim up-stream for ten 7 minute intervals. The following is the data obtained: 1 2 3 4 Number 5 6 6 5 7 8 9 2 10 of Fish 2 10 3 7 5 Part A. How ...

Find the population standard deviation for the following set of data: 4 11 11 2 7

Need help expressing the answer in the following format!. In a survey, 18 people were asked how much they spent on their child's last birthday gift. The results were roughly bell-shaped with a mean of...

Need help solving the last 2 problems!. A computer selects a number X from 4 to 9 randomly and uniformly. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X ~ U(...

Provide a narrative explanation of the role distributions play in simulations. Use examples

I am using Excel to enter the formulas, please advise with what I am doing wrong A. What is the probability of randomly selecting a value below 250, in a normal distribution with a mean of 200 ...

Need help solving the last 3 problems!. The amount of coffee that people drink per day is normally distributed with a mean of 16 ounces and a standard deviation of 6 ounces. 13 randomly selected peopl...

. Find the necessary confidence interval for the binomial proportion p. (Round your answers to three decimal places.) A 95% confidence interval for p, based on a random sample of 900 trials of a bin...

Given the following frequency distribution table for a set of data about the heights of basketball players (in inches) for all players participating in a college basketball game, construct a histogram...

Need help solving the last 3 problems!. Suppose the age that children learn to walk is normally distributed with mean 11 months and standard deviation 2.3 month. 34 randomly selected people were asked...

. QUESTION 37 Consider the following regression estimates (FN3) Linear regression Number of obs = 500 F (1, 498) 163 . 13 Prob > F 0 . 0000 R-squared 0. 2880 Root MSE = 593. 03 Robust income Coef...

Question 3. Using JMP, calculate correlation coefficient (r) and coefficient of determination (r2) for each association and determine the values in the below table. Refer to the textbook 12.3. (15%) V...

. QUESTION 6 5 points Save Answer Imagine you would like to estimate the following model health = B + B drinks_day + u where health is self-rated health on a 1 to 5 scale (5 = very healthy) and drin...

x 1 and x 2 are two variables with e(x 1 ) = 4 and e(x 2 ) = 6. Y= -2x 1 - x 2 . Given this information, find E(y).

Find the population variance for the following set of data: 4 11 11 2 7

. 23 24 25 QUESTION 2 What would be the random variable for this problem? i Cual seria la variable aleatoria para este problema? O a X = the probability of a specific value not to be surpassed. X = ...

. Outcome B C C Pre-treatment Post-treatment Time C1 shows the average outcome of the control group before the treatment T1 shows the average outcome of the treatment group before the treatment C2 s...

To compare the effect of stress caused by noise on the ability to perform a simple task, 86 subjects were divided into two groups—38 subjects as a control group, and 48 subjects as the experimental ...

For d odd, give a symmetric linear filter (i.e., a −j = a j ) that eliminates seasonal components with period d and passes linear trends. What if d is even?

If Y has a Normal Distribution with mean 63 and standard deviation 3.7 find the following: a) P(Y > 60) b) P(57 < Y s 62)

If Y has a Normal Distribution with mean 63 and standard deviation 3.7 find the following: a) P(Y > 60) b) P(57 < Y $ 62)

My barber claims that, on average, it takes him less than 20 minutes to give someone a haircut. A random sample of 9 haircuts yielded a mean of 17.25 minutes. Assume haircut times are normally distrib...

What is the probability of randomly selecting a value above 325, in a normal distribution with a mean of 400 and a standard deviation of 50? I understand how to calculate if it is a certain numbe...

. A snowmobile company stresses high quality in both manufacturing and dealer service. Suppose that the company standard for customer satisfaction is 95% "highly satisfied." Company manage...

Juicing from fevent experience. ." of the computer keyboards produced by an automatic Fig -speed machine are defective If six keyboards are at 100 quid' select ure hamm 60735 Analying the nhamLil...

. 24. [-/0.6 Points] DETAILS AUFEXC4 13.3.001. 0/100 Submissions Used MY NOTES Round each z-score to the nearest hundredth. A data set has a mean of x - 74 and a standard deviation of 10.2. Find the...

. Ages of students: A simple random sample of 100 U.S. college students had a mean age of 22.02 years. Assume the population standard deviation is o : 4.65 years. Construct a 90% confidence interval...

What is the anxiety level (no anxiety, low-medium anxiety and high anxiety) when anticipating multiply vaccine injection. Clearly identify the independent and dependent variables, null and alternate ...

. The stem and leaf plot reveals more than one distinct mode. Therefore, we cannot treat this as a sample from an approximately normal population. Can you summarize/explain what this solution means?

1. Suppose 4 coins are tossed. Find the probability of tossing no heads. (Round to four decimal places.) 2. According to a recent survey of 31 million citizens in the United States, 6 million were p...

. Determine the appropriate critical value(s) for each of the tests in parts a through d below concerning the population proportion. Click the icon to view the standard normal distribution table. a....

. Find the critical value :0",2 needed to construct a confidence interval with level 90%. Round the answer to two decimal places. The critical value for the 90% confidence level is l l.. Don't ...

How are probabilities used in epidemiology to help governments or businesses make decisions about how to minimize new infections?

. An issue that faces individuals investing for retirement is allocating assets among different investment choices. Suppose a study conducted 10 years ago showed that 64% of investors preferred stoc...

. Question 11 1 pts 11. If the p-value that results from statistical testing is less than alpha O a. the results are statistically significant O b. the results are not statistically significant O c....

. A manufacturer produces plastic golf tees. The injector molder produces golf tees that are designed to have an average height of 70 mm. To determine if this specification is met, random samples ar...

Hello, I need help with these problems. Screenshots 29 and 29 are one question.. Find the probability. A sales representative who visits customers at home finds she sells 0, 1, 2, 3, or 4 items accord...

. Snow totals at 2 Stations with different elevations The table below contains observations of ten snowfall events (in feet) at two locations (high and low elevations). Event # High elevation Statio...

Ten Year ago, the number of incidence of AIDS was 25,700 in the US when the population in the middle of the year was reported as 290 million. What is the new cases of AIDS per 100,000 population duri...

Would you help with this Stats problem? Please give an explanation for the answer. . (a) A recent Gallup poll reported that 58% of Americans favor using federal money for preschool education. Three ...

. Let x and y be the Test Score and Number of Units Sold ot a sales trainee raspeotiyely The management of the firm would like to determine whether any relationship exists between 3-: and y. T...

How can one use statistics in their daily life or work