Mathematics, 26.11.2019 20:31 diamonds5307
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) follow. find a 99% confidence interval on the difference in the mean life. car brand 1 brand 21 36925 343182 45300 422803 32100 319504 36240 35500
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