Question

Suppose that grade point averages of undergraduate students at one university have a bell-shaped distribution with a mean of 2.62 and a standard deviation of 0.43. Using the empirical rule, what percentage of the students have grade point averages that are at least 3.48? Please do not round your answer.

Answer 1

3.48 - 2.62 = .86 ... 2 sd above the mean

look at the percentages on the bell curve

Answer 2

86%