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Find a 95% confidence interval on the difference in mean life. Find the following: a. Pooled Variance ,b. Margin of Error c. Upper Mean and d. Lower Mean

Find a 95% confidence interval on the difference in mean life. Find the following: a. Pooled Variance ,b. Margin of Error c. Upper Mean and d. Lower Mean

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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The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data (in kilometers) are as follows. Find a 95% confidence interval on the difference in mean life. Find the following: a. Pooled Variance , b. Margin of Error c. Upper Mean and d. Lower Mean Car Brand 1 Brand 2 1. 36,923 34,318 12. 45,300 42,280 36,420 35,500 3 31,950 4 32,100 37,210 38,015 47,800 48,360 37.810 38,200 33,215 33,500 8
Transcribed Image Text:The manager of a fleet of automobiles is testing two brands of radial tires and assigns one tire of each brand at random to the two rear wheels of eight cars and runs the cars until the tires wear out. The data (in kilometers) are as follows. Find a 95% confidence interval on the difference in mean life. Find the following: a. Pooled Variance , b. Margin of Error c. Upper Mean and d. Lower Mean Car Brand 1 Brand 2 1. 36,923 34,318 12. 45,300 42,280 36,420 35,500 3 31,950 4 32,100 37,210 38,015 47,800 48,360 37.810 38,200 33,215 33,500 8
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