Internet Viewing A researcher wishes to estimate the average number of minutes per day a person spends on the Internet. How large a sample must she select if she wishes to be 99% confident that the population mean is within 9 minutes of the sample mean? Assume the population standard deviation is 40 minutes. Round your final answer up to the next whole number. The researcher needs a sample of at least people. X

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A:

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Q: Applied Basic Statistics

A: n=285P=65%=0.65

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