Section 3.2 Question 9

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Section 3.2 Question 9

Question

A certain standardized​ test’s math scores have a​ bell-shaped distribution with a mean of 520 and a standard deviation of 110.

Complete parts​ (a) through​ (c).

​(a) What percentage of standardized test scores is between 410 and 630​? ​(Round to one decimal place as​ needed.)

​(b) What percentage of standardized test scores is less than 410 or greater than 630​?  ​(Round to one decimal place as​ needed.)

​(c) What percentage of standardized test scores is greater than 740​? ​(Round to one decimal place as​ needed.)

 

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