The manager of a fleet 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) follow.  Car   Brand 1    Brand 2  1      36,925      34,318 2      45,300      42,280 3      36,240      35,500 4      32,100      31,950 5      37,210      38,015 6      48,360      47,800 7      38,200      37,810 8      33,500      33,215 Do the data suggest that the two brands of radial tires prove the same mean life? Use ? = 0.01

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
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ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
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Chapter9: Solving Quadratic Functions
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The manager of a fleet 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) follow. 


Car   Brand 1    Brand 2 
1      36,925      34,318
2      45,300      42,280
3      36,240      35,500
4      32,100      31,950
5      37,210      38,015
6      48,360      47,800
7      38,200      37,810
8      33,500      33,215


Do the data suggest that the two brands of radial tires prove the same mean life? Use ? = 0.01.

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