A library checks out an average of 250 books per day with a, Ask an Expert

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A library checks out an average of 250 books per day, with a standard deviation of 75 books. If a sample of 36 days of operation is selected and the sample mean is computed,

a. What is the expected value of the sample mean?

b. What is the value for the standard error of the mean?

c. What is the probability that the sample mean for the 36 days will be within 220 and 260 books?

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Category:- Statistics and Probability
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