Author Question: Henry's first history exam score is +1 standard deviation from the mean in a normal distribution. ... (Read 64 times)

kamilo84 · **on:** Jun 20, 2018

Henry's first history exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 65 and a standard deviation of 5 . Henry's percentile rank would be approximately:

a. 84.
b. 55.
c. 70.
d. none of the above.

Question 2

Sue's first psychology exam score is 2 standard deviations from the mean in a normal distribution. The test has a mean of 75 and a standard deviation of 5 . Sue's percentile rank would be approximately:

a. 16.
b. 2.5.
c. 65.
d. none of the above.