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Company XYZ knows that replacement times for the mircowaves it produces are normally distributed with a mean of 11.3 yea
Posted: Thu Jul 14, 2022 4:51 pm
by answerhappygod
- Company Xyz Knows That Replacement Times For The Mircowaves It Produces Are Normally Distributed With A Mean Of 11 3 Yea 1 (22.87 KiB) Viewed 40 times
Company XYZ knows that replacement times for the mircowaves it produces are normally distributed with a mean of 11.3 years and a standard deviation of 2 years. Let X be the replacement time of a randomly selected mircowave. a. What is the distribution of X?X∼() Please show the following answers to 4 decimal places. b. If a mircowave is randomly chosen, find the probability that it will be replaced in less than 10.7 years. c. If a mircowave is randomly chosen, find the probability that it will be replaced between 7.9 and 9.9 years. Please show the following answer to 1 decimal place. d. If the company wants to provide a warranty so that only 7% of the mircowaves will be replaced before the warranty expires, what is the time length of the warranty? years