IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What is the probability of a score greater than 110?

A group of 9 people take an IQ test.
What is the probability that their average is greater than 93?
What is the probability that their average is 100?

A group of 9 people take an IQ test.
What is the probability that their average is greater than 93?
What is the probability that their average is 100?

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Mar 3, 2018

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