Question 581921: Sally's has a business that was open for 4 days. The number of customers on each day were 7, 11, 9, 4. Assume that the samples of size 2 are randomly selected with replacement from this population of 4 values. The first sample selected is 11,9. What is the mean of the sampling distribution of means?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Sally's has a business that was open for 4 days. The number of customers on each day were 7, 11, 9, 4. Assume that the samples of size 2 are randomly selected with replacement from this population of 4 values. The first sample selected is 11,9. What is the mean of the sampling distribution of means?
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Procedure:
There are 4C2 = 6 number pairs.
7/11 ; 7/9 ; 7/4; 11/9; 11/4; 9/4
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Find the sum of each pair and divide each by 2 to get the
mean of each pair.
9 ; 8 ; 5.5 ; 10; 7.5; 6.5
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Add those up and divide by 6 to get the mean of the sample means.
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Cheers,
Stan H.
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