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NikAS [45]
3 years ago
7

Suppose that IQ scores have a bell shaped distribution with a mean of 98 and standard deviation of 13. Using the empirical rule,

what percentage of IQ scores are less than 111?

Advanced Placement (AP)
1 answer:
inn [45]3 years ago
5 0
Yaya says:
 IQ Scores have a bell-shaped distribution with a mean of 100 and a standard deviation of 15. What percentage of IQ scores are between 70 and 130?

<span>Solution: </span>130 – 100 = 30 which is 2(15). Thus, 130 is 2 standard deviations to the right of the mean. 100 – 70 = 30 which is 2(15). Thus, 70 is 2 standard deviations to the left of the mean. Since 70 to 130 is within 2 standard deviations of the mean, we know that <span>about 95% of the IQ scores would be between 70 and 130.</span>

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