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18 May, 14:35

The mean height of a group of 500 nonsmoking college students is 74 inches and the standard deviation is 5 inches. What is the probability that a random sample of 25 students from this group, the average height will be between 73 and 75 inches? (Answer in four decimal places)

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  1. 18 May, 16:41
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    500 (non smokers) : 25 (random students out of the group) = 20 inches. 20 inches : 74 inches = 3.70
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