The Next Questions Are Based on the Following Information

Multiple Choice

The Next Questions Are Based On The Following Information:
The supervisor of a production line believes that the average time to assemble an electronic component is 14 minutes.Assume that assembly time is normally distributed with a standard deviation of 3.4 minutes.The supervisor times the assembly of 14 components,and finds that the average time for completion is 11.6 minutes.
-Which of the following statements is most accurate?

A) fail to reject the null hypothesis at α ≤ 0.10
B) reject the null hypothesis at α = 0.025,but not at α = 0.05
C) reject the null hypothesis at α = 0.05,but not at α = 0.01
D) reject the null hypothesis at α = 0.01