In need of help quickly..
The grades on the last science exam had a mean of 89%. Assume the population of grades on science exams is known to be distributed normally, with a standard deviation of 14%. Approximately what percent of students earn a score between 75% and 89%?

Question

In need of help quickly..
The grades on the last science exam had a mean of 89%. Assume the population of grades on science exams is known to be distributed normally, with a standard deviation of 14%. Approximately what percent of students earn a score between 75% and 89%?

ivanzud · Answer

You can look at the standard deviation graph. Between 0 and 1 since 89-deviation(14)=75.

ivanzud · Answer

Between 0 and -1 i mean.