Metroplitan 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 questionairre sent, to owners of one of the manufacturer's full-sized cars revealed several complaints about early transmission problems., To learn more about the transmission failures. Metroolitan used a sample of actual transmission repairs provided by a transmission firm in the Detrooit area. The following data show the actual number of miles driven for 50 vehicles at the time of transmission failure.