4. A company claims that their laptops have an average battery life of 6 hours with a standard deviation of 0.5 hours. Suppose a random sample of 36 laptops is taken from the production line. (a) Is it possible that the sample mean battery life is less than 5.5 hours? Explain. (b) Can the sample mean battery life be more than 6.2 hours? Justify your answer. (c) What can you say about the probability of the sample mean battery life being between 5.8 and 6.2 hours?
4. A company claims that their laptops have an average battery life of 6 hours with a standard deviation of 0.5 hours. Suppose a random sample of 36 laptops is taken from the production line. (a) Is it possible that the sample mean battery life is less than 5.5 hours? Explain. (b) Can the sample mean battery life be more than 6.2 hours? Justify your answer. (c) What can you say about the probability of the sample mean battery life being between 5.8 and 6.2 hours?
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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Transcribed Image Text:4. A company claims that their laptops have an average battery life of 6 hours with a standard
deviation of 0.5 hours. Suppose a random sample of 36 laptops is taken from the
production line.
(a) Is it possible that the sample mean battery life is less than 5.5 hours? Explain.
(b) Can the sample mean battery life be more than 6.2 hours? Justify your answer.
(c) What can you say about the probability of the sample mean battery life being between
5.8 and 6.2 hours?
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