Mathematics, 04.03.2020 09:39 izeahzapata1

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 13. Use the empirical rule to determine the following.
(a) What percentage of people has an IQ score between 61 and 139?
(b) What percentage of people has an IQ score less than 74 or greater than 126?
(c) What percentage of people has an IQ score greater than 126?

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Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of...

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