Suppose exam scores are normally distributed with M = 70 and SD = 10. According to the text, 34.13% of exam scores should fall between ________ and ________.
A) 60 and 80
B) 70 and 80
C) 69 and 71
D) 70 and 100

Question

Quizplus · Accepted Answer

In a normal distribution, 34.13% of the data falls between the mean (M) and one standard deviation (SD) above the mean. Here, the mean is 70 and one SD above the mean is 80 (70 + 10).

Suppose Exam Scores Are Normally Distributed with M = 70