ate luiz < Question 9 of 12 > An admissions director wants to estimate the mean age of all s of the population mean. Assume the population of ages is norm (a) Determine the minimum sample size required to construct a population standard deviation is 1.8 years. (b) The sample mean is 20 years of age. Using the minimum sa the population mean could be within 8% of the sample mean? Click here to view page 1 of the Standard Normal Table. Click