An important factor in selecting software for word-processing and database management system is the time required to learn how to use the system. To evaluate three file management systems, a firm designed a test involving five word-processing operators. Since operator variability was believed to be a significant factor, each of the five operators was trained on each of the three file management systems. The data obtained follow.

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4) An important factor in selecting software for word-processing and database management
system is the time required to learn how to use the system. To evaluate three file management
systems, a firm designed a test involving five word-processing operators. Since operator
variability was believed to be a significant factor, each of the five operators was trained on each
of the three file management systems. The data obtained follow.
System
A
B.
1
16
16
24
Operator
2
19
17
22
3
14
13
19
4
13
12
18
5
18
17
22
Use a = 0.05, test to see whether there is any difference in the mean training time (in hours) for
the three systems.
Transcribed Image Text:4) An important factor in selecting software for word-processing and database management system is the time required to learn how to use the system. To evaluate three file management systems, a firm designed a test involving five word-processing operators. Since operator variability was believed to be a significant factor, each of the five operators was trained on each of the three file management systems. The data obtained follow. System A B. 1 16 16 24 Operator 2 19 17 22 3 14 13 19 4 13 12 18 5 18 17 22 Use a = 0.05, test to see whether there is any difference in the mean training time (in hours) for the three systems.
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