The first statistics exam had a mean of 72 and a standard deviation of 15 points; the second had a mean of 82 and a standard deviation of 3 points. Anna scored a 79 on both tests. Megan scored 85 on the first exam and 73 on the second. They both totaled 158 points on the two exams, but Anna claims that her total is better. Explain. The total of Anna's z-scores is , which is greater than Megan's total of. Round to one decimal place as needed.)