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pls help with hw question A certain standardized test's math scores have a bell-shaped distribution with a mean of 515 and alstandard deviation of 119.

pls help with hw question

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A certain standardized test's math scores have a bell-shaped distribution with a mean of 515 and alstandard deviation of 119. Complete parts (a) through (c). (a) What percentage of standardized test scores is between 396 and 634? % (Round to one decimal place as needed.)

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