An IQ test is designed so that the meanis 100 and the standard deviationis 12 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statisticsstudents such that it can be said with 95% confidence that the sample mean is within 4 IQ points of the true mean. Assume that mean = 12 and determine the required sample size.
n = _______ (round up to the nearest integer)
This solution provides step-by-step calculations for sample size, formatted in an attached Excel file.