Mathematics, 30.03.2021 01:50 dez2745

An IQ test is designed so that the mean is 100 and the standard deviation is 9 for 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 2 IQ points of the true mean. Assume that a=9 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. The required sample size is
nothing. (Round up to the nearest integer.)

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