Essay
A local newspaper sells an average of 2100 papers per day, with a standard deviation of 500 papers. Consider a sample of 60 days of operation.
a. What is the shape of the sampling distribution of the sample mean number of papers sold per day? Why?
b. Find the expected value and the standard error of the sample mean.
c. What is the probability that the sample mean will be between 2000 and 2300 papers?
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