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Mathematics, 12.11.2019 20:31 arrissa1234hinkle

The data set with the results of a test for 1000 students is approximated by a bell curve. the mean score was 72%. the standard deviation was 7%. based on this information, what is the best approximation for the number of students who scored 80% or better?
a.) 16
b.) 159
c.) 309
d.) 800

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