haileymccallister8 haileymccallister8

08-02-2024
Mathematics

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empirical rule:

Scores of an IQ test have a bell-shaped distribution with a mean of 100 and a standard deviation of 19.
Use the empirical rule to determine the following.

(a) What percentage of people has an IQ score between 62 and 138?

(b) What percentage of people has an IQ score less than 43 or greater than 157?

(c) What percentage of people has an IQ score greater than 138?

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