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Author Question: The life expectancy of Timely brand watches is normally distributed with a mean of four years and a ... (Read 49 times)

Tb12162018

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on: Mar 25, 2023

The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months.

a.What is the probability that a randomly selected watch will be in working condition for more than five years?
b.The company has a three-year warranty period on their watches. What percentage of their watches will be in operating condition after the warranty period?
c.What is the minimum and the maximum life expectancy of the middle 95% of the watches?
d.Ninety-five percent of the watches will have a life expectancy of at least how many months?

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by Tb12162018 on Mar 25, 2023

ladan86

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Reply #1 on: Mar 25, 2023
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Tb12162018

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Reply 2 on: Mar 25, 2023
YES! Correct, THANKS for helping me on my review

LegendaryAnswers

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Reply 3 on: Yesterday
Wow, this really help

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