Question

Professor Scott has 84 students in his college mathematics lecture class. The scores on the midterm exam are normally distributed with a mean of 72.3 and a standard deviation of 8.9. How many students in the class can be expected to receive a score between 63.4 and 81.2? Express the answer to the nearest student.

Answer 1

A suitable calculator can show you the number of students having a score in that range is expected to be about 57.

Answer 2

A suitable calculator can show you the number of students having a score in that range is expected to be about 57.