The ages of a group of patients being treated at one hospital for osteoporosis are summarized in the frequency histogram below. Based on the histogram, is a large sample necessary to conduct a hypothesis test about the mean age? If so, why?

◦ Yes; data do not appear to be normally distributed but skewed left.
◦ Yes; data do not appear to be normally distributed but bimodal.
◦ Yes; data do not appear to be normally distributed but skewed right.
◦ No; data appear to be normally distributed with no outliers.