A manufacturer of flashlight batteries took a sample of 13 batteries from a day's production and used them continuously until they failed to work.The life lengths of the batteries, in hours, until they failed were:342, 426, 317, 545, 264, 451, 1049, 631, 512, 266, 492, 562, and 298.

At the .05 level of significance, is there evidence to suggest that the mean life length of the batteries produced by this manufacturer is more than 400 hours?

• A.Yes, because the test value 1.257 is less than the critical value 2.179
• B.Yes, because the test value 1.257 is less than the critical value 1.782
• C.No, because the test value 1.257 is greater than the critical value 1.115
• D.No, because the p-value for this test is equal to .1164