In a Study of Distances Traveled by Buses Before the First

Multiple Choice

In a study of distances traveled by buses before the first major engine failure, a sample of 191 buses results in a mean of 96,700 km. The population standard deviation is known to be 37,500 km.
-The appropriate test statistic to test the hypotheses is _____.

A) 2.47
B) 34.13
C) 478.16
D) -34.13
E) -2.47