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4.07. A taxi company manager is trying to decide whether the use of radial tires instead...

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Statistics

4.07. A taxi company manager is trying to decide whether the useof radial tires instead of regular belted tires improves fueleconomy. Randomly selected 12 cars with radial tires yielded in asample mean of 5.7 and sample standard deviation of 0.4, anotherrandomly selected 15 cars with belted tires yielded a sample meanof 5.2 and a standard deviation of 0.8. Assume the populations tobe approximately normal with equal variances.

State and conclude your hypothesis at the 0.05 level ofsignificance based on manager’s claim?

Find P-Value.

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