A Gallup poll wants to determine the mean number of books Americans read each year. How many subjects are needed to estimate the

Question

A Gallup poll wants to determine the mean number of books Americans read each year. How many subjects are needed to estimate the average number of books Americans read with a margin of error of 0.8 books with 99% confidence?
Initial results of the Gallup poll indicate that the population standard deviation is 9.9 books.
Round your answer up to the next integer.

Kunduz · Accepted Answer

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