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Author Question: The average life expectancy of computers produced by Ahmadi, Inc. is 6 years with a standard ... (Read 85 times)

rubiosusy7

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on: Mar 25, 2023

The average life expectancy of computers produced by Ahmadi, Inc. is 6 years with a standard deviation of 10 months.  Assume that the lives of computers are normally distributed.  Suggestion:  For this problem, convert ALL of the units to months.


a.What is the probability that a randomly selected computer will have a life expectancy of at least 7 years?
b.Computers that fail in less than 5 years will be replaced free of charge.  What percentage of computers are expected to be replaced free of charge?
c.What are the minimum and the maximum life expectancy of the middle 95% of the computers’ lives?  Give your answers in months and do not round your answers.
d.The company is expecting that only 104 of this year’s production will fail in less than 3 years and 8 months.  How many computers were produced this year?

Essentials of Statistics for Business and Economics ¦ Anderson, Sweeney, Williams, Camm, Cochran ¦ 7th Edition
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Marked as best answer by rubiosusy7 on Mar 25, 2023

KAyteeBee1129

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Reply #1 on: Mar 25, 2023
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rubiosusy7

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Reply 2 on: Mar 25, 2023
Wow, this really help

pratush dev

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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