A set of final examination grades in an introductory statistics course is normallydistributed, with a mean of 72 and a standard deviation of 9

If the professor 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 90 on this exam or a grade of 66 on a differentexam, where the mean is 62 and the standard deviation is 4?

answer statistically and explain.

Is a student is better off or worse off? with a grade of 90 on this exam

because the Z value for the grade of 90 is ?

and the Z value for the grade of 66 is?

(Round to two decimal places asneeded.)