Which test was better? Gina took a midterm in her math class and her biology class. After she gets her grades for those midterms, she wonders if she did better on the math midterm or the biology midterm. For the math test, she received 47 points where the mean was 39 and the standard deviation was 13. Calculate the Z-score for the math test for Gina. Be sure to round to 2 decimal places