The heights of women aged 20 to 29 are approximately Normal with mean 64 inches and standard deviation 2.7 inches. Men the same age have mean height 69.3 inches with standard deviation 2.8 inches.

(a) What is the z-score for a woman 60 inches tall?
z-score =

What is the z-score for a man 74 inches tall?
z-score =