The qualitycontrol manager at a compact uorescent light bulb (CFL) factory needs to determine whether the mean life of a large shipment of CFLs is equal to 7,523 hours. The population standard deviation is 92 hours. Arandom sample of 64 light bulbs indicates a sample mean life of 7,505 hours. a.At the 0.05 level of signicance. is there evidence that the mean life is different from 7,523 hours? b. Compute the pvalue and interpret its meaning. c. Construct a 95% condence interval estimate of the population mean life of the light bulbs. It. Compare the results of (a) and (c). What conclusions do you reach? a. Let p be the population mean. Determine the null hypothesis, H0, and the attemative hypothesis, H1. H02p= H141