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Mathematics, 12.12.2019 01:31 coontcakes

Assume the weights of a group of people are distributed in such a way that they are symmetric and unimodal. the average weight is 160 pounds and the standard deviation is 9 pounds. estimate the percentage of people have weights between 151 and 169 pounds.

a. 68%
b. 32%
c. 95%
d. 99.7%

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