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Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the empirical rule to

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. Use the empirical rule to determine the following. (a) What percentage of people has an IQ score between 70 and 130? (b) What percentage of people has an IQ score less than 85 or greater than 115? (c) What percentage of people has an IQ score greater than 115? (a) D% (Type an integer or a decimal.)

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