Bunuel wrote:
The arithmetic mean and standard deviation for a certain normal distribution are 9.5 and 1.5, respectively. Which of these values is more than 2.5 standard deviations from the mean?
(A) 5.75
(B) 6
(C) 6.5
(D) 13.25
(E) 13.5
2.5 SD from the mean = 13.25
9.5 + 1.5 * 2 + 1.5 *0.5 = 13.25
Only E is more than 13.25
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Quote which i can relate to.
Many of life's failures happen with people who do not realize how close they were to success when they gave up.