Section 3.2 Question 8

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Section 3.2 Question 8

Question

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 85 and 115​?

​(b) What percentage of people has an IQ score less than 55 or greater than 145​?

​(c) What percentage of people has an IQ score greater than 145​?

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This question is taken from Math 136 – Introduction to Statistics » Summer 2021 » Homework