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IQ is normally distributed with a mean of 100 and a standard deviation of 16, N(100, 16). Calculate and compare the probability a person has

IQ is normally distributed with a mean of 100 and a standard deviation of 16, N(100, 16). Calculate and compare the probability a person has an IQ between 84 & 116 to the probability a sample of 9 people has an average IQ between 84 and 116? Show all work!

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