Question: please explain steps 8. A company has developed a new Type of ligthulb, and wanTs To esTimaTe iTs mean lifeTime, a simple random sample of

please explain steps

8. A company has developed a new Type of ligthulb, and wanTs To esTimaTe iTs mean lifeTime, a simple random sample of 36 bulbs had a sample mean lifeTime of 720 hours wiTh The sample standard deviaTion of 25 hours. (8 poinTs) a. ConsTrucT 98% confidence inTerval for The populaTion mean lifeTime of all bulbs. b. Can we conclude ThaT mean lifeTime for populaTion is more Than 732 hours based on 98% confidence inTerval

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