Solved: A newspaper store checks out an average of u 320 papers, Basic Statistics

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A newspaper store checks out an average of u 320 papers

A Newspaper store checks out an average of u = 320 papers per day, with a standard deviation of ó=75 newspapers. Consider a sample of 30 days of operation, with x being the sample mean number of newspapers checked out per day.

What is the shape of the sampling distribution of x? Why?
What is the standard deviation of x?
What is the probability that the sample mean for the 30 days will be between 300 and 340 newspapers?
What is the probability the sample mean will show 325 or more books checked out?

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Basic Statistics: A newspaper store checks out an average of u 320 papers

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Basic Statistics: A newspaper store checks out an average of u 320 papers

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