SOLUTION: A department store has determined that 20% of all their sales are credit sales. A random sample of 25 sales is selected. What is the expected value of the sample proprtion that ar
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Question 861104: A department store has determined that 20% of all their sales are credit sales. A random sample of 25 sales is selected. What is the expected value of the sample proprtion that are credit sales? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A department store has determined that 20% of all their sales are credit sales. A random sample of 25 sales is selected. What is the expected value of the sample proprtion that are credit sales?
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Ans: E(x) = np = 25*0.20 = 5
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Cheers,
Stan H.
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