IQ scores are normally distributed with a mean score of 100 and a stan.pdf

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The document discusses IQ scores and their distribution. The mean IQ score is 100 with a standard deviation of 15. The probability that a randomly selected individual has an IQ score above 120 is approximately 16%. The IQ scores that fall within the middle 95% of individuals range from 70 to 130.

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IQ scores are normally distributed with a mean score of 100 and a standard deviation of 15. a. (6
points) If a random individual is selected, what is the probability that their IQ score is above a
120 ? b. (8 points) A researcher wants to determine IQ scores for the majority of individuals.
Determine the IQ scores for the middle 95% of individuals. What are these IQ scores?

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