Someone has claimed that IQ scores are decreasing because folks are relying too heavily on technology to make each and every decision. Suppose you’d like to estimate the mean IQ for Cecil students, and we’d like to be within 2 points of the true mean IQ with 95% confidence. Presuming the standard deviation of IQ scores is still 15 points, give an estimate of the number of Cecil students you’d have to sample to begin this investigation. Show your work.

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