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mean life span is 17.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the ample mean lifetime is 17.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.) ✔ reasonable because the probability that a sample of 30 batteries would have a lifetime of at most. The company's claim is not 17.7 hours is about Additional Materials Reading

mean life span is 17.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the ample mean lifetime is 17.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.) ✔ reasonable because the probability that a sample of 30 batteries would have a lifetime of at most. The company's claim is not 17.7 hours is about Additional Materials Reading

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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NeverReady batteries has engineered a newer, longer lasting AAA battery. The company claims this battery has an average life span of 18 hours with a standard deviation of 0.8 hours. Your statistics class questions this claim. As a class, you randomly select 30 batteries and find that the sample mean life span is 17.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the sample mean lifetime is 17.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.) reasonable because the probability that a sample of 30 batteries would have a lifetime of at most The company's claim is not 17.7 hours is about Additional Materials Reading
Transcribed Image Text:NeverReady batteries has engineered a newer, longer lasting AAA battery. The company claims this battery has an average life span of 18 hours with a standard deviation of 0.8 hours. Your statistics class questions this claim. As a class, you randomly select 30 batteries and find that the sample mean life span is 17.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the sample mean lifetime is 17.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.) reasonable because the probability that a sample of 30 batteries would have a lifetime of at most The company's claim is not 17.7 hours is about Additional Materials Reading
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