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  3. scores of an iq test have a​ bell-shaped

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

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Statistics

Scores of an IQ test have a​ bell-shapeddistribution with a mean of 100 and a standard deviation of 20.

Use the empirical rule to determine the following:

​(a) What percentage of people has an IQ scorebetween
60 and 140?

​(b) What percentage of people has an IQ score lessthan
60 or greater than 140?

​(c) What percentage of people has an IQ score greaterthan 160?

Answer & Explanation Solved by verified expert
4.0 Ratings (639 Votes)
Let X Score of an IQ testGiven that X has bell    See Answer
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