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Section 3.2 Question 9
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.)