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 of 2 means the box weighs 2 standard deviations above the mean. With a mean of 16 oz and a standard deviation of 1 oz, its weight is 16 + 2(1) = 18 oz. So the correct choice is 18 oz.

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