Use the following to answer questions :
The mean weekly earnings of all female workers in a state is $710 and the mean weekly earnings of all male workers in the same state is $760.The standard deviations of the weekly earnings are $86 for the females and $106 for the males.Suppose we take one sample of 316 female workers and another sample of 329 male workers from this state.
-What is the mean of the sampling distribution of the difference between the mean weekly earnings for females and males?
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Q9: Two samples drawn from two populations are
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