8. In a sample of 500 students from statistics courses in the fall semester. 312 earned a grade of C or higher. in the spring semester, 400 of the 525 students sampled earned a grade of C or higher. If we treat the fall semester as \"sample 1" and the spring semester as \"sample 2,\" what is the appropriate standardized test statistic to determine whether a smaller proportion of students passed in the fall? (A) z = 43.699 (B) 2 = 4.?92 ((3)2 = 4.?92 (Djz = 6.699 (E)The ztest statistic depends on the level of signicance of the test