A set of final examination grades in an introductory statistics course is normallydistributed, with a mean of 79 and a standard deviation of 7.

a.) If the teacher grades on a curve(for example, the professor could giveA's to the top10% of theclass, regardless of thescore), is a student better off with a grade of 86 on the exam with a mean of 79 and a standard deviation of 7 or a grade of 67 on a differentexam, where the mean is 61 and the standard deviation is 3? Show your answer statistically and explain.

A student is better off

with a grade of 86 on the exam with a mean of 79 and a standard deviation of 7 because the Z value for the grade of 86 is

nothing

and the Z value for the grade of 67 on the different exam is

nothing

.