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Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a

Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6. Rich'spercentile rank(NOT grade) would be approximately

Group of answer choices

A. 66%.

B. cannot determine from the information given

C. 84%.

D. 70%.

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