Metropolitan Research, Inc., a consumer research organization, conducts surveys designed to evaluate a wide variety of products and services available to consumers. In one particular study, Metropolitan looked at consumer satisfaction with the performance of automobiles produced by a major Detroit manufacturer. A questionnaire sent to owners of one of the manufacturer's full-sized cars reviewed several complaints about early transmission problems. Nationwide, the population mean mileage is 80,000 miles, with a population standard deviation of 18,000 miles. (I already did a descriptive statistics table)... 1. Develop a 95% confidence interval for the mean number of miles driven until transmission failure for the population of automobiles with transmission failure. Provide a mangerial interpretation of the interval estimate. 2. Discuss the implication of your statistical findings in terms of the belief that some owners of the automobiles experienced early transmission failures. 3. How many repair records should be sampled if the research firms wants the population mean number of miles driven until transmission failure to be estimated with a margin of error of 5000 miles? Use 95% confidence. 4. What other information would you like to gather to evaluate the tranmission failure problem more fully?


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