An electrical appliance made by company A has an average life of 2500 hours, with astandard deviation of 500 hours. Another company B makes this appliance with anaverage life of 2300 hours, and a standard deviation of 800 hours. We take 300 devicesfrom company A and 200 devices from company B. Calculate the probability that thedifference between average life of the sample from company A and of the sample fromcompany B is between 100 and 200 hours.O 0.9418None of the other optionsO 0.05820.4418

Answered: Image /qna-images/answer/7c48e5df-1e0d-4e8f-9ccb-08cc1ee9e103.jpg

Answered: from company A and 200 devices from…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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An electrical appliance made by company A has an average life of 2500 hours, with a standard deviation of 500 hours. Another company B makes this appliance with an average life of 2300 hours, and a standard deviation of 800 hours. We take 300 devices from company A and 200 devices from company B. Calculate the probability that the average life of the sample from company A is 100 hours less than the average life of the sample from company B. O None of the other options O 0.0582 0.4418 O 0.9418
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from company A and 200 devices from company B. Calculate the probability that the difference between average life of the sample from company A and of the sample from company B is between 100 and 200 hours.