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People were polled on how many books the read the previous year. Initial survey results indicate...

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Statistics

People were polled on how many books the read the previous year.Initial survey results indicate that s=11.6 books.

(a) How many subjects are needed to estimate the mean number ofbooks read the previous year within four books with 95%​confidence?

(b) How many subjects are needed to estimate the mean number ofbooks read the previous year within two books with 95​%confidence?

(c) How many subjects are needed to estimate the mean number ofbooks read the previous year within four books with 99​%​confidence?

Answer & Explanation Solved by verified expert
4.5 Ratings (943 Votes)
Solution Given thatPopulation standard deviation 116 booksa Margin of error E 4 booksAt 95    See Answer
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