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When Mrs. Myles gave a test, the scores were normally distributed with a mean of 72 and a standard deviation of 8. This means that 95% of her students scored between which two scores?

A) 40 and 100

B) 48 and 96

C) 56 and 88

D) 64 and 80

User Ed Smith
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1 Answer

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95% are within 2 standard deviations of the mean, that is, 72∓2×8. The appropriate choice is ...
C) 56 and 88
User Cheluis
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