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The ages of a group of 159 randomly selected adult females have a standard deviation of 18.1 years. Assume that the ages of female statistim students have less variation than ages of females in the general population, so let cr= 18.1 years for the sample size calculation. How many female statistics student ages must be obtained in order to estimate the mean age of all female statistim students? Assume that we want 99% condence that the sample mean is within onehalf year of the population mean. Does it seem reasonable to assume that the ages of female statistics students have less yartation than ages of females in the general population? The required sample size is (Round up to the nearest whole number as needed.) Does it seem reasonable to assume that the ages of female statistics students have less variation than ages of females in the general population? 0 A. Yes, because statistics students are typically olderthan people in the general population. 0 B. Yes, because statistics students are typically younger than people in the general population. 0 C. No, because there is no age dierence between the population of statistics students and the general population. 0 D. No, because statistics students are typically older than people in the general population