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The gestation time for humans has a mean of 266 days and a standard deviation of 25 days. If 100 women are are randomly selected, find the probability that they have a mean pregnancy between 266 days and 268 days.A) 0.2119B) not enough information to determineC) 0.7881D) 0.2881E) 0.55172. Assume that the heights of adult white men have a mean of 67.9 inches and a standard deviation of 2.8 inches. If 64 men are randomly selected, find the probability that they have a mean height greater than 68.9 inches.A) 0.8188B) 0.9671C) not enough information to determineD) 0.0021E) 0.90053. Assume that the salaries of elementary school teachers in the U. S. have a mean of $32,000 and a standard deviation of $3,000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.A) 0.0475B) 0.9525C) 0.1312D) not enough information to determineE) 0.3312
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