Recall that the scores in Mr. Young's class had a mean of 78 and a standard deviation of 8. About what percent of students scored between 78% and 94%?

A. 47.5%

B. 34%

C. 13.5%

D. 68%

Question

Mathematics

Alessandra Reilly

11 May, 02:38

Recall that the scores in Mr. Young's class had a mean of 78 and a standard deviation of 8. About what percent of students scored between 78% and 94%?

A. 47.5%

B. 34%

C. 13.5%

D. 68%

+3

Answers (1)

Know the Answer?

Jordin Webb · Answer 1

B. 34%.

Step-by-step explanation:

94 - 78 = 16 which is 2 times the standard deviation from the mean.

For a normal distribution this is 34% of the total students.

Recall that the scores in Mr. Young's class had a mean of 78 and a standard deviation of 8. About what percent of students scored between 78% and 94%?A. 47.5%B. 34%C. 13.5%D. 68%

Recall that the scores in Mr. Young's class had a mean of 78 and a standard deviation of 8. About what percent of students scored between 78% and 94%?

A. 47.5%

B. 34%

C. 13.5%

D. 68%