DuraBurn claims that its light bulbs have at least twice the average lifetime of SuperGlo's bulbs. The mean lifetime of the SuperGlo bulbs is = 364 hours. A sample of 14 DuraBurn bulbs exhibited an average lifetime = 689 hours with a standard deviation s = 255 hours. Using the hypotheses Ho: = 728 Ha: < 728, compute the value of the test statistic, and find the P-value for the sample. State your conclusions about DuraBurn's claim