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QUESTION
A new IQ test is designed so that the mean is 100 and the S. is 16 for the population of normal adults. Find the sample size necessary to estimate...
A new IQ test is designed so that the mean is 100 and the S.D. is 16 for the population of normal adults. Find the sample size necessary to estimate the mean iq score of residents of a state. We want to be 95% confident that our sample mean is within 2 IQ points of the true mean. Assume that o = 16 and determine the required sample size
