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ABC Computers manufacturers network computer server systems and is interested in improving its customer support services

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ABC Computers manufacturers network computer server systems and is interested in improving its customer support services. As a first step, its marketing department has been charged with the responsibility of summarizing the extent of customer problems in terms of system dontime. The most recent customers were surveyed to determine the amount of downtime (in hours) they had experienced during the previous month. These data are isted below. (Copy and paste into Excel for faster calaulations.)

Downtime

43.0

24.9

25.1

25.6

25.8

26.2

25.7

25.6

25.5

26.8

26.9

20.8

26.0

27.4

27.1

27.0

27.5

27.5

27.7

27.7

27.8

27.8

20.4

25,5

27.2

27.2

26.9

27.7

26.9

27.2

27.4

27.1

27 .4

ABC wants to include in their new advertising campaign that thair computer systems are more relilable than their compattors, XYZ.

XYZ advertise their average system downtime is only 29 hours.) Detarmine if ABC can advertiea that on average their systems are more reliable than XYZ (Use 5% significance and assume the standard deviation for all of ABC's systems is 13 hours.)

Hypotheses: Ho: Round 1 to two decimals and p-value to four)

Test Statistic:t Conclusion:

If ABC company were to purchese system upgrades that would reduce the standard deviation of downtime by 4 hours, the p-value above would Click to select)Therefore.

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