On a standardized test for science aptitude the average is 100. A CHEM 101 professor wants to know if her class is significantly different from the average. She has 26 students with M = 95 and SS = 2500. a. Which test statistic is most appropriate to use for this research question (z for a score (X), z for sample mean (M), or single sample t)? Explain/support your answer. b. Test the research question using a = .01. Type your calculated values here (critical value, calculated value)