An important factor in selecting software for word-processing and database manag

Question

An important factor in selecting software for word-processing and database management systems is the time required to learn how to use the system. To evaluate three file management systems, a firm designed a test involving word processing operators. Since operator variability was believed to have an impact, each of the operators was trained on all three of the file management systems D.F. MS ?. VALUE System 0.000019 103.33 51.67 56.36 64.67 4 16.17 17.63 Operator 0.000494 ERROR 7.33 0.92 175.33 14 TOTAL

Explanation / Answer

Testing of hypothesis

let, H0 = Each operator take same time to operate the system.

v/s

H1 =  Each operator take different time to operate the system.

we have given the

F value =for system => 56.36 and for operator => 17.63 ,

p value = for system =>0.000019 and for operator =>0.000494

Decision rule :-if p value < 0.05 at 5% level of significance. then reject hypothesis.

Now for our hypothesis we use these decision rule.

For system ,

the p value(0.000494) < 0.05 at level of significance.

so we reject the null hypothesis H0 .

accept H1 i.e. Each operator take different time to operate the three of the file management system.

like these we can also see the systems are different or not with the help of decision rule.

let, H0 = the systems are same

v/s

H1 = the systems are different

the p value(0.000019) < 0.05 at level of significance.

so we reject the null hypothesis H0 .

accept H1 i.e.the management file systems are different.

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