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 p-value corresponding to the test statistic is _____.
A)0.0000
B)0.0068
C)-0.0068
D)0.0136
E)-0.0136

Question

Quizplus · Accepted Answer

The p-value corresponding to the test statistic is 0.0068, which is the probability of obtaining a test statistic as extreme as ours (or more extreme) if the null hypothesis is true. A p-value less than the standard significance level of 0.05 indicates that the results are statistically significant and we can reject the null hypothesis. Therefore, the best choice is B.

In a Study of Distances Traveled by Buses Before the First