Question 1 Assume that the average height of students at the University of Toronto Mississauga (to be viewed as a population) is 170cm with a standard deviation of 8cm. (a) If the students are placed randomly into classes of 40 each, what will be the standard deviation of the class means for height (1.; the standard error of the mean)? (b) Using your answer to part (a), what is the z-score for a class whose average height is 168cm? (c) If you were testing the null hypothesis (11455), would you reject H0 for this class at the 5% significance level for a two-tailed test