The sum height of men and women is 139600 and 161000 inches respectively. Their mean height is 66.8 inches and the average of their mean is 67.1 inches.
<h3>Calculation of the sum and mean</h3>
Number of women =2500
Mean height of women = 64.4 inches
So, the total height of 2500 women = 64.4*2500 = 161000 inches
Number of men=2000
Mean height of men = 69.8 inches
So, the total height of 2000 men = 69.8*2000 = 139600 inches
Therefore, the sum height of all 4500 people = 161000+139600 =b
So, their mean height = 300600/ 4500 = 66.8 inches
The sum of mean height of men and women = 64.4 + 69.8 = 134.2 inches
Hence, The average of their mean = 134.2/ 2= 67.1 inches.
Learn more about the mean here:
brainly.com/question/13086302
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