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[Solution Library] IQ Scores. Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the

Question: IQ Scores. Assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). (Hint: Draw a graph in each case.)

Find the probability that a randomly selected adult has an IQ between 90 and 110 (referred to as the normal range).

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