A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 746 hours. A random sample of 27 light bulbs has a mean life of 716 hours. Assume the population is normally distributed and the population standard deviation is 63 hours. At a=0.02, do you have enough evidence to reject the manufacturer's claim? Complete parts (a) through (e). ... (a) Identify the null hypothesis and alternative hypothesis. OA. Ho: 2746 (claim) Ha: μ<746 OB. Ho: #746(claim) H₂:μ=746 OC. Ho: μ≤716 Ha: μ>716 (claim)

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