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

View Answer

Answer: E