There are 2500 women and 2000 men enrolled in a certain college. The mean height for the
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There are 2500 women and 2000 men enrolled in a certain college. The mean height for the women is 64.4 inches, and the mean height for the men is 69.8 inches.
a. Find the sum of the heights of the women.
b. Find the sum of the heights of the men.
c. Find the mean height for all 4500 people.
d. The average of the means for men and women is (64.4 + 69.8)/2 = 67.1. Explain why this is not equal to the mean height for all the people.
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