Joe Has Collected Data on the Number of Hours Ten-Year-Olds

Multiple Choice

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.