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An automobile company is considering a new manufacturer for car brakes. The new man- ufacturer would be more expensive, but they claim their higher-quality brakes
An automobile company is considering a new manufacturer for car brakes. The new man- ufacturer would be more expensive, but they claim their higher-quality brakes are more reliable, with 8% more brakes passing inspection than their competitor. Set up appropriate hypotheses for the test. The quality control engineer at the automobile company collects a sample of brakes, examining 1500 brakes from each company, and she finds that 1245 brakes pass inspection from the current supplier and 1407 pass inspection from the prospective supplier. Using these data, evaluate the hypotheses with a significance level of 5%
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