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An IQ test is designed so that the mean is 100 and the standard deviation is 19for the population of normal adults. Find the sample

An IQ test is designed so that the mean is 100 and the standard deviation is 19for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 99%confidence that the sample mean is within 5IQ points of the true mean. Assume that sigma =19.

The required sample size is __. (Round up to the nearest integer.)

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