Question

Asked Sep 26, 2019

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A certain standardized test's math scores have a bell-shaped distribution with a mean of 520 and a standard deviation of 119.

What percentage of standardized test scores is less than 401 or greater than 639?

Step 1

Given Data

Mean = 520

Standard Deviation = 119

Percentage of test scores less than 401 is given by

Step 2

**Percentage of standardized test scores is less than ...**

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