Mathematics, 27.10.2020 18:10, maren17

People in a public library were polled on how many books they read in the last five years. Preliminary survey results indicate the sample standard deviation is 18.61 books. How many subjects are needed to estimate the mean number of books read by library users in the last five years within four books with 99% confidence

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People in a public library were polled on how many books they read in the last five years. Prelimina...