Week 7 eResources Chapter Exercise Page* Lane et al. 14 2 512 6 512 17 5 614 14 617 Illowsky et al. 11 70 614 102 621 113 623 117 623 12 66 677 82 684 * Page numbers are approximated due to version control of the eResources, especially for Illowsky et al. Lane et al. Chapter 14 2. The formula for a regression equation is Y’ = 2X + 9. a. What would be the predicted score for a person scoring 6 on X? b. If someone’s predicted score was 14, what was this person’s score on X? 6. For the X,Y data below, compute: a. r and determine if it is significantly different from zero. b. the slope of the regression line and test if it differs significantly from zero. c. the 95% confidence interval for the slope. Lane et al. Chapter 17 5. At a school pep rally, a group of sophomore students organized a free raffle for prizes. They claim that they put the names of all of the students in the school in the basket and that they randomly drew 36 names out of this basket. Of the prize winners, 6 were freshmen, 14 were sophomores, 9 were juniors, and 7 were seniors. The results do not seem that random to you. You think it’s a little fishy that sophomores organized the raffle and won most of the prizes. Your school is composed of 30% freshman, 25% sophomores, 25% juniors and 20% Seniors. a. What are the expected frequencies of winners from each class? b. Conduct a significance test to determine whether the winners of the prizes were distributed throughout the classes as would be expected based on the percentage of students in each group. Report your Chi Square and p values. c. What do you conclude? 14. A geologist collects hand-specimen sized pieces of limestone from a particular area. A qualitative assessment of both texture and color is made with the following results. Is there evidence of association between color and texture for these lime stones? Explain your answer. Illowsky et al. Chapter 11 Decide whether the following statements are true or false. 70. The standard deviation of the chi-square distribution is twice the mean. 102. Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown in Table 11.55. Conduct a test for homogeneity at a 5% level of significance. Use the following information to answer the next exercise: Suppose an airline claims that its flights are consistently on time with an average delay of at most 15 minutes. It claims that the average delay is so consistent that the variance is no more than 150 minutes. Doubting the consistency part of the claim, a disgruntled traveler calculates the delays for his next 25 flights. The average delay for those 25 flights is 22 minutes with a standard deviation of 15 minutes. 113. df = ________ Illowsky et al. Chapter 12 Linear equations 66. Can a coefficient of determination be negative? Why or why not? Use the following information to answer the next two.

1. Week 7
eResources
Chapter
Exercise
Page*
Lane et al.
14
2
512
6
512
17
5
614
14
617
Illowsky et al.
11
70
614
102
621

2. 113
623
117
623
12
66
677
82
684
* Page numbers are approximated due to version control of the
eResources, especially for Illowsky et al.
Lane et al. Chapter 14
2. The formula for a regression equation is Y’ = 2X + 9.
a. What would be the predicted score for a person scoring 6 on
X?
b. If someone’s predicted score was 14, what was this person’s
score on X?
6. For the X,Y data below, compute:
a. r and determine if it is significantly different from zero.
b. the slope of the regression line and test if it differs
significantly from zero. c. the 95% confidence interval for the
slope.

3. Lane et al. Chapter 17
5. At a school pep rally, a group of sophomore students
organized a free raffle for prizes. They claim that they put the
names of all of the students in the school in the basket and that
they randomly drew 36 names out of this basket. Of the prize
winners, 6 were freshmen, 14 were sophomores, 9 were juniors,
and 7 were seniors. The results do not seem that random to you.
You think it’s a little fishy that sophomores organized the raffle
and won most of the prizes. Your school is composed of 30%
freshman, 25% sophomores, 25% juniors and 20% Seniors.
a. What are the expected frequencies of winners from each
class?
b. Conduct a significance test to determine whether the winners
of the prizes were distributed throughout the classes as would
be expected based on the percentage of students in each group.
Report your Chi Square and p values.
c. What do you conclude?
14. A geologist collects hand-specimen sized pieces of
limestone from a particular area. A qualitative assessment of
both texture and color is made with the following results. Is
there evidence of association between color and texture for
these lime stones? Explain your answer.

4. Illowsky et al. Chapter 11
Decide whether the following statements are true or false.
70. The standard deviation of the chi-square distribution is
twice the mean.
102. Do men and women select different breakfasts? The
breakfasts ordered by randomly selected men and women at a
popular breakfast place is shown in Table 11.55. Conduct a test
for homogeneity at a 5% level of significance.
Use the following information to answer the next exercise:
Suppose an airline claims that its flights are consistently on
time with an average delay of at most 15 minutes. It claims that
the average delay is so consistent that the variance is no more
than 150 minutes. Doubting the consistency part of the claim, a
disgruntled traveler calculates the delays for his next 25 flights.
The average delay for those 25 flights is 22 minutes with a
standard deviation of 15 minutes.
113. df = ________
Illowsky et al. Chapter 12
Linear equations
66. Can a coefficient of determination be negative? Why or why
not?

5. Use the following information to answer the next two exercises.
The cost of a leading liquid laundry detergent in different sizes
is given in Table 12.31.
82.
a. Using “size” as the independent variable and “cost” as the
dependent variable, draw a scatter plot.
b. Does it appear from inspection that there is a relationship
between the variables? Why or why not?
c. Calculate the least-squares line. Put the equation in the form
of: ŷ = a + bx
d. Find the correlation coefficient. Is it significant?
e. If the laundry detergent were sold in a 40-ounce size, find the
estimated cost.
f. If the laundry detergent were sold in a 90-ounce size, find the
estimated cost.
g. Does it appear that a line is the best way to fit the data? Why
or why not?
h. Are there any outliers in the given data?
i. Is the least-squares line valid for predicting what a 300-ounce
size of the laundry detergent would you cost? Why or why not?
j. What is the slope of the least-squares (best-fit) line? Interpret
the slope.
1. Organizational Behavior Week 8:
Watch the video from Karl McDonnell, titled “Which has a
greater impact on performance: Job Satisfaction, or Grit?” Then
give your opinion on how much design of work has an impact

6. on job satisfaction. Choose whether you believe job satisfaction
is an extrinsic or intrinsic feeling, and explain why.
2. Business Admin Capstone Week 8 #1:
Analyze the three internal governance mechanisms (ownership
concentration, boards of directors, and executive compensation)
and recommend a possible fourth mechanism that would help
align the interests of managerial agents with those of the firm’s
owners. Provide specific examples to support your response.
From the e-Activity, determine how U.S.-based corporations
could incorporate elements of the corporate governance
practices you researched to help top-level managers make better
ethical decisions. Provide specific examples to support your
response.
3. Business Admin Capstone Week 8 #2:
Corporate governance has become a hot issue in the U.S. over
the past two decades. From your analysis of the case study,
determine two possible corporate governance challenges that
might be faced by Best Buy as a result of its rapid growth and
why they could become corporate governance issues.
Make recommendations for how Best Buy can overcome these
challenges. Provide specific examples to support your response.
4. Business Law Week 8:
Review the article / video below, which set the stage for your
discussion response.
Did Target ignore data breach warnings? (2:55)
http://www.cbsnews.com/news/target-ignored-systems-hacking-
warnings-report-says/

7. Based on the video, did the company presented in the video
allow a breach of security based on the laws and ideas discussed
in the text? Why or why not? What was done to help remedy the
situation, and was it enough based on the legal standard? What
legal steps should the company take (or should the company
have taken) to avoid personal identity or information from being
compromised? Be sure to support your response.
5. Sociology Week 8:
Identify the most significant problems with the way foreign aid
is presently dispensed by international lending institutions.
Then, discuss at least three (3) recommendations that you would
make to remedy this situation so that food, medical, and
financial assistance actually reaches the poor.