Question

The mean ACT math score in 2001 was 20.7 with an approximate standard
deviation of 6. The approximate percentage of students that scored
above 26.7 on the math portion of the ACT in this year was?

Answer 1

Is it multiple choice?

Answer 2

Since the mean is 20.7, half of the scores were above that value. 68% of people will score within one standard deviation below or above the mean. This means that of the 50% that were above 20.7, 34% of them were between the mean and mean plus SD. This leaves 16% of people to be above 26.7.

Answer 3

yes it is multiple choice,
1) 34
2) 2.35
3) 16
4) 68

Answer 4

Thank you!