February 20, 2017

Homework Help: statistics

Posted by Anonymous on Monday, October 7, 2013 at 8:31pm.

To see whether people are keeping their car tires inflated to the correct level of 35 pounds per square inch (psi), a tire company manager selects a sample of 36 tires and checks the pressure. The mean of the sample is 33.5 psi, and the population standard deviation is 3 psi. Are the tires properly inflated? Use α = 0.10.

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