In order to estimate the difference between the average yearly
salaries of top managers in private and governmental organizations,
the following information was gathered.
Private |
Governmental |
|
Sample Size |
50 |
60 |
Sample Mean (in $1000s) |
90 |
80 |
Sample Standard Deviation |
||
(in $1000s) |
6 |
8 |
Develop an interval estimate for the difference between the average yearly salaries of top managers of the two sectors. Use 95% confidence and give your answers in dollars.
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