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Automotive Engineers tested the gas mileage in kilometers per Liter (km/L) of a certain passenger car. A random sample of 25 cars resulted to a mean gas mileage of 15 km/L and a variance of 2.5 km/L squared. Construct a 99.9% confidence interval for the true mean gas mileage of this car.

Automotive Engineers tested the gas mileage in kilometers per Liter (km/L) of a certain passenger car. A random sample of 25 cars resulted to a mean gas mileage of 15 km/L and a variance of 2.5 km/L squared. Construct a 99.9% confidence interval for the true mean gas mileage of this car.

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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Automotive Engineers tested the gas mileage in kilometers per Liter (km/L) of a certain passenger car. A random sample of 25 cars resulted to a mean gas mileage of 15 km/L and a variance of 2.5 km/L squared. Construct a 99.9% confidence interval for the true mean gas mileage of this car. What is the confidence level? 99.9% What is the value of t-score? 3.745 What is the Margin of Error? 0.37 What is the confidence interval? 14.63, 15.37
Transcribed Image Text:Automotive Engineers tested the gas mileage in kilometers per Liter (km/L) of a certain passenger car. A random sample of 25 cars resulted to a mean gas mileage of 15 km/L and a variance of 2.5 km/L squared. Construct a 99.9% confidence interval for the true mean gas mileage of this car. What is the confidence level? 99.9% What is the value of t-score? 3.745 What is the Margin of Error? 0.37 What is the confidence interval? 14.63, 15.37
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