Author Question: If an IQ test is constructed to have a mean of 100 and a standard deviation of 16, approximately ... (Read 78 times)

rlane42 · **on:** Jun 19, 2018

If an IQ test is constructed to have a mean of 100 and a standard deviation of 16, approximately what percentage of scores falls between 84 and 116?

a. 34 percent
b. 95 percent
c. 68 percent
d. 50 percent

Question 2

Joe has collected data on the number of hours ten-year-olds spend watching television each week. He tells you that the distribution of scores followed a truly normal curve. Which of the following is suggested by Joe's statement?

a. Fifty percent of the scores fall below the mean.
b. The mean, median, and mode are all different.
c. Sixty percent of the scores fall within one standard deviation above and below the mean.
d. Ten percent of the scores fall two standard deviations above the mean.