The first Stat exam had a mean of 85and a standard deviation of 2 points; the second had a mean of 65 and a standard deviation of 12 points. Reginald scored an 85 on the first test and an 83 on the...

The first Stat exam had a mean of 85and a standard deviation of 2 points; the second had a mean of 65 and a standard deviation of 12 points. Reginald scored an 85 on the first test and an 83 on the second. Sara scored a 91 on the first test but only aa 59 on the second. Although​ Reginald's total score is​ higher, Sara feels she should get the higher grade. Explain her point of view.

How would you find the standard deviation for Sara and for Reginald?