The mean height of American women is 64.5 inches. Suppose we select ten American women at random and the mean of the heights of the ten women is 62 .

(a) The number 64.5 is a

A. sample.
B. parameter.
C. population.
D. statistic.

(b) The number 62 is a

A. sample.
B. parameter.
C. population.
D. statistic.