Question: For a particular sample of 50 scores on a psychology exam, the following results were obtained.

Mean = 78 Midrange = 72 Third quartile = 94 Mode = 84
Median = 80 Standard deviation = 11 Range = 52 First quartile = 68

a. What score was earned by more students than any other score? Why?

b. How many students scored between 68 and 94 on the exam?

c. What was the highest score earned on the exam?

d. What was the lowest score earned on the exam?

e. How many students scored within three standard deviations of the mean \(\bar{X}\) ?