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Within our company we want to know if we are paying higher bonuses in the following...

Within our company we want to know if we are paying higher bonuses in the following two different regions of the United States. The national sales manager provided the following information. We would like to be 95% confident about our finding.

East: 113280, 112100, 120360, 121540, 115640, 114460, 119180, 116820, 121540, 123900, 115640, 114460, 120360, 118000, 113280

West: 115640, 108560, 115640, 118000, 109740, 116820, 120360, 107380, 110920, 107380

Find:

1. sample mean for east

2. sample mean for west

3. sample standard deviation for east

4. sample standard deviation for west

5. pooled variance

6. statement of null hypothesis

7. statement of alternative hypothesis

8. calculate test statistic

9. rejection region critical value

10. conclusion

Math   Statistics-And-Probability   
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