The computer operations department had a business objec- tive of reducing the amount of time to fully update each sub- scriber's set of messages in a special secured email system. An experiment was conducted in which 24 subscribers were selected and three different messaging systems were used. Eight subscribers were assigned to each system, and the update times were measured. The results, stored in AMS11-1. are presented in Table AMSII.1. DC BE PI Aft atic TABLE AMS11.1
The computer operations department had a business objec- tive of reducing the amount of time to fully update each sub- scriber's set of messages in a special secured email system. An experiment was conducted in which 24 subscribers were selected and three different messaging systems were used. Eight subscribers were assigned to each system, and the update times were measured. The results, stored in AMS11-1. are presented in Table AMSII.1. DC BE PI Aft atic TABLE AMS11.1
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Chapter 11: Analysis of Variance
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mendation for the level of each factor that will come closest to
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undertaken.
11.42 A pet food company has the business objective of having the
weight of a can of cat food come as close to the specified weight
as possible. Realizing that the size of the pieces of meat contained
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430 CHAPTER 11 | Analysis of Variance TYPE OF
1. Analyze the data in Table AMS11.1 and write a report to the
computer operations department that indicates your findings.
Include an appendix in which you discuss the reason you
selected a particular statistical test to compare the three email
interfaces.
Managing Ashland MultiComm Services
BREAKFAST 35.2 43.6 33.7 38.1...
PHASE 1
The computer operations department had a business objec-
tive of reducing the amount of time to fully update each sub-
scriber's set of messages in a special secured email system.
An experiment was conducted in which 24 subscribers were
selected and three different messaging systems were used.
Eight subscribers were assigned to each system, and the
update times were measured. The results, stored in AMS11-1.
are presented in Table AMS11.1.
CHAPTER REVIEW PROBLEMS 428 CASES FOR
CHAPTER 11 430 Managing Ashland Multicomm...
DO NOT CONTINUE UNTIL THE PHASE 1 EXERCISE HAS
BEEN COMPLETED.
PHASE 2
After analyzing the data in Table AMS11.1, the computer oper-
ations department team decided to also study the effect of the
connection media used (cable or fiber).
TABLE AMS11.1
Update Times (in seconds) for Three Different Systems
The team designed a study in which a total of 30 subscribers
were chosen. The subscribers were randomly assigned to one of
the three messaging systems so that there were five subscribers
in each of the six combinations of the two factors-messaging
system and media used. Measurements were taken on the
updated time. Table AMS11.2 summarizes the results that are
stored in AMS11-2.
System 1
System 2
System 3
38.8
41.8
32.9
42.1
36.4
36.1
45.2
39.1
39.2
34.8
28.7
29.3
48.3
36.4
41.9
37.8
36.1
31.7
41.1
35.8
35.2
43.6
33.7
38.1
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