A tire manufacturer is considering a newly designed tread pattern for its all-weather tires. Tests have indicated

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A tire manufacturer is considering a newly designed tread pattern for its all-weather tires. Tests have indicated that these tires will provide better fuel efficiency and longer tread life. The last remaining test is for braking effectiveness. The company hopes the tire will allow a car travelling at 80 kilometres per hour to come to a complete stop within an average of 35 metres after the brakes are applied. It will adopt the new tread pattern unless there is strong evidence that the tires do not meet this objective. The distances (in metres) for 10 stops on a test track were 41.5, 41, 37, 36.5, 38.2, 39.1, 40.2, 39.3, 37.1, and 38.0. Should the company adopt the new tread pattern? Test an appropriate hypothesis and state your conclusion. Explain why you made the recommendation you did.

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Business Statistics

ISBN: 9780133899122

3rd Canadian Edition

Authors: Norean D. Sharpe, Richard D. De Veaux, Paul F. Velleman, David Wright

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