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What is the value of R that is 2.5 standard deviations above the mean?
A continuous random variable R has a mean of 77 and a standard deviation of 8.
What is the value of R that is 2.5 standard deviations above the mean?
A . 79.5
B . 85
C . 87.5
D . 93
E . 97
Answer: E
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