Question

The grades on the last art exam had a mean of 75%. Assume the population of grades on art exams is known to be distributed normally, with a standard deviation of 7%. Approximately what percent of students earn a score between 75% and 82%?

37.2%
84.1%
34.1%
50%

Answer 1

Need help can't solve this standard deviation problem

Answer 2

@zepdrix

Answer 3

@mathstudent55

Answer 4

Nevermind got it it's 34.1%