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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

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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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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