An IQ test is designed so that mean is 100 and the standard deviation is 13 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 same means within 4IQ points of the true mean assumed that new equal 13 and determined the required sample size using technology and determine if this is a reasonable sample size for a real world calculation the required simple size is what