Independent random samples of managers' yearly salaries (in $1000) taken from governmental and private organizations provided the following information. At a .05 level of significance, test to determine if there is a significant difference between the average salaries of the managers in the two sectors.
Government
Private
80
75
s9
10
n28
31
What will be an ideal response?
?
| H0: ?1 - ?2 = 0 |
| Ha: ?1 - ?2? 0 |
| df = 56; test statistic t = 2.021; p-value (two-tailed) is between .02 and .05; reject H0; there is a significant difference between the average salaries in two populations. |
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