BUS352 Grand Canyon Managing Ashland MultiComm Services Case Paper Please help with my Business Statistics Assignment. I will attach the directions. There are a total of 9 questions Don’t mind all of the screenshots because they are from different chapters. Days Calls
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CASES FOR CHAPTER 9
Managing Ashland MultiComm Services
1. Compute the sample statistics and determine whether
there is evidence that the population mean upload speed
is less than 0.97.
2. Write a memo to management that summarizes your
conclusions.
Continuing its monitoring of the upload speed first de-
scribed in the Chapter 6 Managing Ashland MultiComm
Services case on page 221, the technical operations depart-
ment wants to ensure that the mean target upload speed for
all Internet service subscribers is at least 0.97 on a standard
scale in which the target value is 1.0. Each day, upload
speed was measured 50 times, with the following results
(stored in AMS9).
0.854 1.023 1.005 1.030 1.219 0.977 1.044 0.778 1.122 1.114
1.091 1.086 1.141 0.931 0.723 0.934 1.060 1.047 0.800 0.889
1.012 0.695 0.869 0.734 1.131 0.993 0.762 0.814 1.108 0.805
1.223 1.024 0.884 0.799 0.870 0.898 0.621 0.818 1.113 1.286
1.052 0.678 1.162 0.808 1.012 0.859 0.951 1.112 1.003 0.972
ISBN: 978-1-323-26258-0
The Ashland MultiComm Services (AMS) marketing de-
partment wants to increase subscriptions for its 3-For-All
telephone, cable, and Internet combined service. AMS mar-
keting has been conducting an aggressive direct-marketing
campaign that includes postal and electronic mailings and
telephone solicitations. Feedback from these efforts indicates
that including premium channels in this combined service is
a very important factor for both current and prospective sub-
scribers. After several brainstorming sessions, the marketing
no-cost benefit of subscribing to the 3-For-All service.
The research director, Mona Fields, is planning to con-
duct a survey among prospective customers to determine
All service in order to generate a subscription to the service.
Based on past campaigns and on industry-wide data, she es-
timates the following:
1. If a sample of 50 prospective customers is selected and no
free premium channels are included in the 3-For-All service
offer, given past results, what is the probability that
a. fewer than 3 customers will subscribe to the 3-For-All
service offer?
b. O customers or 1 customer will subscribe to the 3-For-
All service offer?
c. more than 4 customers will subscribe to the 3-For-All
service offer?
d. Suppose that in the actual survey of 50 prospective
customers, 4 customers subscribe to the 3-For-All ser-
vice offer. What does this tell you about the previous
estimate of the proportion of customers who would
subscribe to the 3-For-All service offer?
Number of Free
0
1
2
3
4
5
Probability of
Subscriptions
0.02
0.04
0.06
0.07
0.08
0.085
lem 1, suppose that two free premium channels are in-
cluded in the 3-For-All service offer. Given past results,
what is the probability that
a. fewer than 3 customers will subscribe to the 3-For-All
service offer?
b. O customers or 1 customer will subscribe to the 3-For-
All service offer?
c. more than 4 customers will subscribe to the 3-For-All
service offer?
d. Compare the results of (a) through (c) to those of 1.
e. Suppose that in the actual survey of 50 prospective
customers, 6 customers subscribe to the 3-For-All ser-
vice offer. What does this tell you about the previous
ISBN: 978-1-323-26258-0
Business Statistics: A First Course, Seventh Edition, by David M. Levine, Kathryn A. Szabat, and David F. Stephan. Published by Pearson.
196
CHAPTER 5 Discrete Probability Distributions
Number of Free
estimate of the proportion of customers who would
subscribe to the 3-For-All service offer?
f. What do the results in (e) tell you about the effect of
offering free premium channels on the likelihood of
obtaining subscriptions to the 3-For-All service?
3. Suppose that additional surveys of 50 prospective cus-
tomers were conducted in which the number of free
premium channels was varied. The results were as
follows:
1
3
4.
5
Number of
Subscriptions
5
6
6
7
How many free premium channels should the research director
recommend for inclusion in the 3-For-All service? Explain.
Managing Ashland MultiComm Services
For what variable in the Chapter 2 “Managing Ashland
MultiComm Services” case (see page 78) are numerical
descriptive measures needed?
1. For the variable you identify, compute the appropriate
numerical descriptive measures and construct a boxplot.
2. For the variable you identify, construct a graphical dis-
play. What conclusions can you reach from this other plot
that cannot be made from the boxplot?
3. Summarize your findings in a report that can be included
Digital Case
descriptive measures in this continuing Digital Case from
Chapter 2
Open EndRunGuide.pdf, the EndRun Financial Services
“Guide to Investing.” Reexamine EndRun’s supporting data
for the “More Winners Than Losers” and “The Big Eight
Difference” and then answer the following:
1. Can descriptive measures be computed for any variables?
How would such summary statistics support EndRun’s
claims? How would those summary statistics affect your
perception of EndRun’s record?
2. Evaluate the methods EndRun used to summarize the re-
sults presented on the “Customer Survey Results” page.
Is there anything you would do differently to summarize
these results?
3. Note that the last question of the survey has fewer
responses than the other questions. What factors may
have limited the number of responses to that question?
CardioGood Fitness
2. Write a report to be presented to the management of
page 78. Using the data stored in CardioGood Fitness :
1. Compute descriptive statistics to create a customer profile
for each CardioGood Fitness treadmill product line.
More Descriptive Choices Follow-up
Follow up the Using Statistics Revisited section on page 130
by computing descriptive statistics to analyze the differences
in 3-year return percentages, 5-year return percentages, and
10-year return percentages for the sample of 316 retirement
funds stored in Retirement Funds. In your analysis, examine
differences between the growth and value funds as well as
the differences among the small, mid-cap, and large market
cap funds.
Clear Mountain State Student Surveys
1. The student news service at Clear Mountain State
University (CMSU) has decided to gather data about the
undergraduate students who attend CMSU. They create and
distribute a survey of 14 questions and receive responses
each numerical variable included in the survey, compute
all the appropriate descriptive statistics and write a report
2. The dean of students at CMSU has learned about the
undergraduate survey and has decided to undertake
a similar survey for graduate students at CMSU. She
creates and distributes a survey of 14 questions and re-
ceives responses from 44 graduate students (stored in
GradSurvey). For each numerical variable included in
the survey, compute all the appropriate descriptive sta-
tistic and write a report summarizing your conclusions.
ISBN: 978-1-323-26258-0
Managing Ashland MultiComm Services
Recently, Ashland MultiComm Services has been criticized
for its inadequate customer service in responding to ques-
tions and problems about its telephone, cable television, and
Internet services. Senior management has established a task
force charged with the business objective of improving cus-
tomer service. In response to this charge, the task force col-
lected data about the types of customer service errors, the
cost of customer service errors, and the cost of wrong bill-
ing errors. It found the following data:
Cost of Customer Service Errors in the Past Year
Type of Errors
Cost (\$ thousands)
Incorrect accessory
17.3
62.4
Incorrect contact phone
21.3
Invalid wiring
40.8
On-demand programming errors
38.8
Subscription not ordered
20.3
Suspension error
46.8
Termination error
50.9
Website access errors
60.7
Wrong billing
121.7
Wrong end date
40.9
Wrong number of connections
28.1
Wrong price quoted
50.3
Wrong start date
40.8
Wrong subscription type
60.1
Total
701.2
Types of Customer Service Errors
Type of Errors
Frequency
Incorrect accessory
27
42
Incorrect contact phone
31
Invalid wiring
9
On-demand programming error
14
Subscription not ordered
8
Suspension error
15
Termination error
22
Website access error
30
Wrong billing
137
Wrong end date
17
Wrong number of connections
19
Wrong price quoted
20
Wrong start date
24
Wrong subscription type
33
Total
448
Type and Cost of Wrong Billing Errors
Type of Wrong Billing Errors Cost (\$ thousands)
Declined or held transactions
7.6
Incorrect account number
104.3
Invalid verification
9.8
Total
121.7
1. Review these data (stored in AMS2-1). Identify the vari-
ables that are important in describing the customer ser-
vice problems. For each variable you identify, construct
the graphical representation you think is most appropri-
ate and explain your choice. Also, suggest what other in-
formation concerning the different types of errors would
be useful to examine. Offer possible courses of action for
either the task force or management to take that would
support the goal of improving customer service.
2. As a follow-up activity, the task force decides to collect
data to study the pattern of calls to the help desk (stored
in AMS2-2). Analyze these data and present your conclu-
sions in a report.
ISBN: 978-1-323-26258-0
Business Statistics: A First Course, Seventh Edition, by David M. Levine, Kathryn A. Szabat, and David F. Stephan. Published by Pearson.