Question: Out of 600 candidates who applied to a specific department at the IDC, only 150 were admitted. We know that the grades at the admission exam are normally distributed with a mean of 70 and standard deviation 10.

A. Calculate the % of people who got grades between 65 and 85 on the admission exam.

B. What’s the lowest admission grade to the department?

C. The 200 candidates with the lowest grades will have to pass a preparatory course. What’s the highest grade that puts you in this group?