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Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2.646 g/mi and standard deviation 0.8 g/mi. A company has 80 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. a) What's the approximate model for the distribution of y? Explain. b) Estimate the probability that y is between 2.7 and 2.8 g/mi. c) There is only a 5% chance that the fleet's mean CO level is greater than what value?

Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2.646 g/mi and standard deviation 0.8 g/mi. A company has 80 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. a) What's the approximate model for the distribution of y? Explain. b) Estimate the probability that y is between 2.7 and 2.8 g/mi. c) There is only a 5% chance that the fleet's mean CO level is greater than what value?

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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Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2.646 g/mi and standard deviation 0.8 g/mi. A company has 80 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. a) What's the approximate model for the distribution of y? Explain. b) Estimate the probability that y is between 2.7 and 2.8 g/mi. c) There is only a 5% chance that the fleet's mean CO level is greater than what value?
Transcribed Image Text:Carbon monoxide (CO) emissions for a certain kind of car vary with mean 2.646 g/mi and standard deviation 0.8 g/mi. A company has 80 of these cars in its fleet. Let y represent the mean CO level for the company's fleet. a) What's the approximate model for the distribution of y? Explain. b) Estimate the probability that y is between 2.7 and 2.8 g/mi. c) There is only a 5% chance that the fleet's mean CO level is greater than what value?
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