An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 11 years of the population mean Assume the population of ages is normally distributed (e) Determine the minimum sample size required to construct a 90% confidence interval for the population mean Assume the population standard deviation is 17 years The sample mean is 21 years of age Using the minimum sample size with a 30% level of confidence, does it seem likely that the population mean could be within 8% of the sample mean? within 1% of the sample mean? Standard Normal Tets. Click hersten ge2f the Standard Nom Table Explain Click he dlound up to the nearest whole number)