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# Senior executives and computer hours

The manager of a software company wishes to study the number of hours senior executives spend at their computers by type of industry. The manager chooses five executives from three different industries. At the .05 level of significance, what should be concluded that the amount of time spent is different?

Senior Executives
Banking
12
10
10
12
10

Retail
8
8
6
8
10

Insurance
10
8
6
8
10

A) State the hypothesis
B) State the decision rule
C) State the test statistic
D) State the reject/accept null hypothesis with step by step guidance

#### Solution Preview

Here the null hypothesis tested is:
Ho: There is no significant difference in the mean number of hours spent per week by the 3 industries.
H1: There is significant difference in the mean number of hours spent per week by the 3 industries.

The test statistic used is F test (ANOVA)

Rejection criteria:
Reject ...

#### Solution Summary

This solution provides answers for hypothesis testing, decision rules, test statistics.

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