Please help

Provide an appropriate response. Test scores for a statistics class had a mean of 79 with a standard deviation of 4.5. Test scores for a calculus class had a mean of 69 with a standard deviation of 3.7. Suppose a student gets a 75 on the statistics test and a 87 on the calculus test. Calculate the z-score for each test. On which test did the student perform better relative to the other students in each class