Question: A certain standardized tests math scores have a bell-shaped distribution with a mean of 520 and a standard deviation of 119. (a) What percentage of

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

(a) What percentage of standardized test scores is between 401 and 639?

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

(c) What percentage of standardized test scores is greater than 758?

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