QUESTION 5 A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a standard deviation of 120 hours. You purchased 144 of these lightbulbs with the idea that you would purchase more if the mean lifetime of your sample were more than 680 hours. What is the probability that you will not buy again from this manufacturer?
QUESTION 5 A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a standard deviation of 120 hours. You purchased 144 of these lightbulbs with the idea that you would purchase more if the mean lifetime of your sample were more than 680 hours. What is the probability that you will not buy again from this manufacturer?
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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![QUESTION 5
A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a
standard deviation of 120 hours. You purchased 144 of these lightbulbs with the idea that you
would purchase more if the mean lifetime of your sample were more than 680 hours. What is the
probability that you will not buy again from this manufacturer?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa5c31afb-398a-4010-8e5c-32dcce262e31%2F98a63a79-9e4f-4988-85e2-704e1cc5a2c2%2Fuady3a_processed.jpeg&w=3840&q=75)
Transcribed Image Text:QUESTION 5
A manufacturer of a lightbulb claimed that its lightbulbs have a mean lifetime of 700 hours with a
standard deviation of 120 hours. You purchased 144 of these lightbulbs with the idea that you
would purchase more if the mean lifetime of your sample were more than 680 hours. What is the
probability that you will not buy again from this manufacturer?
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