Mathematics, 23.04.2021 20:30 Izzyfizzy
the director of vehicle maintenance for a large mass transportation authority wants to know the average life of bus tires for the fleet of 1,800 busses. A random sample of 100 tires is studied and the mean life is 20,000 miles, with a standard deviation of 1,200 miles. Construct and interpret a 95percent confidence interval for the true life of tires.
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the director of vehicle maintenance for a large mass transportation authority wants to know the aver...
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