Quiz 3 Question 3

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Quiz 3 Question 3

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Quiz 3

3.  Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 14. Use the empirical rule to determine the following. ​

(a) What percentage of people has an IQ score between 72 and 128​?

​(b) What percentage of people has an IQ score less than 72 or greater than 128​?

​(c) What percentage of people has an IQ score greater than 114​?

 

 

a

b

c

 

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This question is taken from Math 136 – Introduction to Statistics » Summer 2021 » Quiz 3