Question

(1 point) 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 63.5. (a) the number 64.5 is a a. statistic. b. parameter. c. sample. d. population. (b) the number 63.5 is a a. population. b. statistic. c. sample. d. parameter. note: you can earn partial credit on this problem. you have attempted this problem 0 times. you have 5 attempts left before new version will be requested. you have 3 attempts remaining.

Explanation:

Part (a)

A parameter is a numerical characteristic of a population. The mean height of all American women (64.5 inches) describes the entire population of American women, so it is a parameter. A statistic describes a sample, a sample is a subset of the population, and a population is the entire group. So 64.5 is a parameter.

A statistic is a numerical characteristic of a sample. The mean height of the ten randomly selected American women (63.5 inches) describes a sample (the ten women), so it is a statistic. A population is the entire group, a sample is the subset, and a parameter describes the population. So 63.5 is a statistic.

Answer:

B. parameter.

Part (b)