The life spans of a species of fruit fly have a bell-shaped distribution, with a mean of 36 days and a standard deviation of 5 days.
(A) The life spans of three randomly selected fruit flies are 41 days, 31 days, and 52 days. Find the z-score that corresponds to each life span, are they unusual.
(B) The life spans of three randomly selected fruit flies are 41 days, 51 days, and 46 days. Using the Empirical Rule, find the percentile that corresponds to each life span.