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The mathmatics section of the standardized college entrance exam had a mean of 21.2 SD of 5.5 for a recent year. Assume these are well

The mathmatics section of the standardized college entrance exam had a mean of 21.2 SD of 5.5 for a recent year. Assume these are well modeled by normal distribution?

About what percent of students scored over 31

About what percent scored under 13

What percent scored between 13 and 31?

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