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K A light bulb manufacturer guarantees that the mean life of a certain type of...

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K A light bulb manufacturer guarantees that the mean life of a certain type of light bulb is at least 763 hours A random sample of 28 light bulbs has a mean life of 735 hours Assume the population is noftr distributed and the population standard deviation is 58 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 OA Ho 763 claim H 763 Part 1 of 5 OD Ho 735 claim H 735 OB Ho p 735 Ha 735 claim OE Ho 763 claim H 763 OC Ho H 735 Ha 735 claim OF Ho 763 Haus 763 claim

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