Delilah D Mays
AC10000756
MA260 Statistical Analysis I
Assignment #5 Statistical Analysis I
10/20/2016
1.
Compute the mean and variance of the following discrete probability distribution.
X
2
8
10
P(x)
.50
.30
.20
Means = E[X] = 8*.3+2*.5+10*.2 = 5.4
Vari
Part 1 of 1 Question 1 of 20
90.0/ 100.0 Points
5.0/ 5.0 Points
Humanities majors spend an average of $115 per course on books.
Mathematics majors spend an average of $70 per course on books. What is
the percent difference between the two amounts relative
Part 1 of 1 -
75.0/ 100.0 Points
Question 1 of 20
0.0/ 5.0 Points
A poll was taken of a random sample of 1189 college students. Of these
students, 789 reported that they had a drinking binge (more than 10
drinks in an evening) in the past month. Select th
Part 1 of 1 -
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Question 1 of 20
A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a
standard deviation of 50. If an applicant is randomly selected, find the prob
Jessica Phillips
AC1502234
C17 College mathematics
Assignment 8
3/7/2016
ASSIGNMENT 8
C17 College Mathematics
Directions: Answer each question in the handout and show all your work.
Use Microsoft Equation Editor or a similar tool to help you insert
mathem
Part 1 of 1 -
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Question 1 of 20
The mathematics SAT scores of the seven students in a mathematics seminar are 533, 553, 578, 586, 619,
626, and 633. Suppose that the student with the score 533 drops the seminar and is rep
Part 1 of 1 -
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Question 1 of 20
The results of a poll are stated as follows: Based on a survey of 156 randomly selected students, 90% of the
student body of 2870 students agree that no student should have to take final ex
Part 1 of 1 -
80.0/ 100.0 Points
5.0/ 5.0 Points
Question 1 of 20
One month before a recall election, a poll of 500 Wisconsin voters showed that 46% planned to vote for the
Democratic challenger Tom Barrett and 45% planned to vote for Republican Governor
Part 1 of 2 -
35.0/ 50.0 Points
2.5/ 2.5 Points
Question 1 of 40
The owner of a football team claims that the average attendance at home games is over 4000,
and he is therefore justified in moving the team to a city with a larger stadium. Assume that a
hy
Part 1 of 1 -
Question 1 of 20
95.0/ 100.0 Points
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Find the original data from the stem-and-leaf plot.
A. 95, 91, 99, 101, 111, 115
B. 91, 95, 91, 109, 119, 115
C. 95, 99, 101, 101, 115, 115
D. 95, 99, 101, 109, 115, 115
Question 2 of 20
Id
Part 1 of 1 -
Question 1 of 20
Use the range rule of thumb to approximate the standard deviation.
65.0/ 100.0 Points
5.0/ 5.0 Points
496,598, 503, 528, 565, 601, 576, 543
A. 170.2
B. 60.6
C. 26.25
D. 18.75
Question 2 of 20
0.0/ 5.0 Points
The following da
Part 1 of 1 -
Question 1 of 20
Find the mode(s) for the given sample data. 20, 49, 46, 43, 49, 43, 49, 20, 22
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A. 43
B. 49
C. 20
D. 22
Question 2 of 20
5.0/ 5.0 Points
The students in Hugh Logans math class took the Schol
Part 1 of 1 -
Question 1 of 20
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The ages of employees of a company are summarized in the frequency table. Which line chart below
represents the data?
A.
B.
C.
D.
None of the above
Question 2 of 20
Find the original data f
Part 1 of 2 -
27.5/ 50.0 Points
2.5/ 2.5 Points
Question 1 of 40
A manufacturer claims that the mean amount of juice in its 16 ounce bottles is 16.1 ounces. A consumer
advocacy group wants to perform a hypothesis test to determine whether the mean amount
Part 1 of 1 -
Question 1 of 20
85.0/ 100.0 Points
5.0/ 5.0 Points
The stacked bar chart below shows the percentages of death due to cancer in four geographic regions of the
U.S. that occurred in three ethnic groups in 2003.
In which geographic area did Hi
Part 1 of 2 -
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2.5/ 2.5 Points
Question 1 of 40
Based on meteorological records, the probability that it will snow in a certain town on January 1st is 0.413.
Find the probability that in a given year it will not snow on January 1st in tha
Part 1 of 2 -
Question 1 of 40
If you flip a coin three times, the possible outcomes are HHH, HHT, HTH,
HTT, THH, THT, TTH, TTT. What is the probability of getting at least one head?
40.0/ 50.0 Points
2.5/ 2.5 Points
A. 4/9
B. 5/6
C. 7/8
D. 5/8
2.5/ 2.5 P
1
Ashley Roberson
AC1506598
Human Relations r04v
Assignment 4_04
As unbelievable as it may seem, I do believe a lot of jobs rely heavily on soft
skills verses hard skills. Hard skills are taught or learned. They include education or
trade. Soft skills are
HS250
1.
Romanticism emphasized:
A.a commitment to group solidarity.
B.a focus on feeling, emotion, and imagination.
C.fascination with the future.
D.the common and the every day.
2.
_ spurred the rise in Christian missionary work in East Africa in the ni
Running head: Business Statistics
1
Name:
Date:
Course:
Business Statistics
2
1) Probability and conditional probability in business decisions.
Probability refers to the chances of happening of an event. Thus when we say that
chances of winning a match ar
Statistical Analysis Exam 3
Part 1 of 1 -
100.0/ 100.0 Points
Question 1 of 20
5.0/ 5.0 Points
The mathematics SAT scores of the seven students in a mathematics seminar are 538, 550, 570,
593, 610, 622, and 634. Suppose the student with the score 634 drop
Part 1 of 1 -
75.0/ 100.0 Points
5.0/ 5.0 Points
Question 1 of 20
The scores on a certain test are normally distributed with a mean score of 58 and a standard deviation of 4.
What is the likelihood that a sample of 90 students will have a mean score of at
Part 1 of 1 -
85.0/ 100.0 Points
5.0/ 5.0 Points
Question 1 of 20
If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of
500 hours, use the 68-95-99.7 rule to approximate the percentage of light bulbs
I;,
Active Learning
Questions
For use with classroom
response systems
A researcher claims that less than 62% of voters
favor gun control. State thenull hypothesis and
the alternative hypothesis for a test of significance.
a.
0
H
:p 0.62
b.
:p<O.
0
H
62
62
Delilah D Mays
AC10000756
MA260 Statistical Analysis I
Assignment #5 Statistical Analysis I
10/20/2016
1. A recent article in the Myrtle Beach Sun Times reported that the mean labor cost to repair
a color television is $90 with a standard deviation of $22
Amanda LeMay
AC1603505
Statistical Analysis
July 24, 2017
Assignment 5
1. Compute the mean and variance of the following discrete probability distribution.
x P(x)
2 .50
8 .30
10 .20
Work:
Mean = E(x) = Sum(xP(x) = 2(0.5)+8(0.3)+10(0.2) = 5.4
Variance = V(
MA260
1.The U.S. Federal Aviation Administration reported that passenger revenues on international
flights increased from $528 million in 1977 to $5,100 million in 2000. What is the geometric
mean annual percent increase in international passenger revenue