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Question 15. A manufacturer claims its new candle has a mean lifespan of 90 hours with a standard deviation of 3 hours.
Posted: Tue Apr 26, 2022 5:56 pm
by answerhappygod
- Question 15 A Manufacturer Claims Its New Candle Has A Mean Lifespan Of 90 Hours With A Standard Deviation Of 3 Hours 1 (14.5 KiB) Viewed 27 times
Question 15. A manufacturer claims its new candle has a mean lifespan of 90 hours with a standard deviation of 3 hours. Assume the distribution is normal. What is the probability that a randomly selected candle has a lifespan of a) less than 96 hours? b) between 87 and 93 hours? c) at least 90 hours? Use the Standard Normal Table to determine the probabilities.