A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 742 hours. A random sample of 25 light bulbs has a mean life of 717 hours. Assume the population is normally distributed and the population standard deviation is 55 hours. At a = 0.05, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). (a) Identify the null hypothesis and alternative hypothesis. O A. Ho: H# 742(claim) O B. Ho: H 2 742 (claim) O C. Ho: HIS717 Ha: H = 742 Ha: H 717 (claim) O D. Ho: H = 717 O E. Ho: p 742 Ha: H#717 (claim) Ha: H 2 717 Ha: HS742 (claim)