The heights of adults who identify as men in the U.S. are normally distributed, with a mean of 69.2 inches and a standard deviation of 2.63 inches. The heights of adults who identify as women in the U.S. are also normally distributed, but with a mean of 64.6 inches and a standard deviation of 2.53 inches.

a) If a person who identifies as a man is 6 feet 3 inches tall, what is his z-score (to two decimal places)?

z =

b) If a person who identifies as a woman is 5 feet 11 inches tall, what is her z-score (to two decimal places)?

z =