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4) IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability a randomly selected person has

4) IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability a randomly selected person has an IQ score greater than 120.

5) IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Find the probability a randomly selected person has an IQ score between 100 and 120.

7) IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. What IQ score represents the 98th percentile?

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