The lifespans of gorillas in a particular zoo are normally distributed. The average gorilla lives 161616 years; the standard deviation is 1.71.71, point, 7 years.
Use the empirical rule (68-95-99.7\%)(68−95−99.7%)left parenthesis, 68, minus, 95, minus, 99, point, 7, percent, right parenthesis to estimate the probability of a gorilla living less than 14.314.314, point, 3 years.
