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A national equal employee opportunities committee is conducting an investigation to determine if women employees are...

A national equal employee opportunities committee is conducting an investigation to determine if women employees are as well paid as their male counterparts in comparable jobs. Random samples of 25 males and 28 females in junior academic positions are selected, and the following calculations are obtained from their salary data:

Company A

Company B

Mean

$45,230

$44,920

Stand deviation

$780

$750

We want to test for the alternative hypothesis Ha: μA - μB > 0. The test statistic is
a.

2.968
b.

1.474
c.

5.983
d.

9.282
e.

4.927
math   Statistics-And-Probability   
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Answer #1

Solution: correct option is b.

Test statistic z= 1.474

calculation:

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