30. A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If hcompany provides its 33 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months. Assume cell phone life is a normally distributed variable. O A. 0.0375 О в. 0.2673 О с.0.1357 O D. 0.3632

30. A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. If hcompany provides its 33 employees with a cell phone, find the probability that the mean lifetime of these phones will be less than 23.8 months. Assume cell phone life is a normally distributed variable. O A. 0.0375 О в. 0.2673 О с.0.1357 O D. 0.3632

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter19: Probability And Statistics In Engineering

Section: Chapter Questions

Problem 46P

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