1. Use appropriate descriptive statistics to summarize the transmission failure data. Discuss.
2. Develop a 95% confidence interval for the mean number of miles driven until transmission failure for the population of automobiles with transmission failure. Discuss the interval from a managerial point of view.
3. Discuss the implication of your findings in terms of the belief that some owners of the automobiles experienced early transmission failures.
4. Determine the number of repair records that should be sampled that will provide a 95% confidence interval with a margin of error of 5,000 miles. Discuss why this may be desirable.
5. Discuss other information that would be useful to evaluate the transmission failure more fully.