The weights of boxes of candies produced in a factory are normally distributed with a mean weight of 16 oz and a standard deviation of 1 oz. What is the weight of a box of candies with a z -score of 2 ?

A z-score tells how many standard deviations a value is above or below the mean. A z-score of 2 is 2 standard deviations above the mean, so the weight is 16 + (2 × 1) = 18 oz. The correct choice is 18 oz.

AI-written and checked against the verified answer.