A car manufacturer is concerned that dealers conceal unhappy customers by keeping them out of surveys conducted by the manufacturer. The manufacturer suspects that certain dealers enter incorrect ad-dresses for dissatisfied customers so that they do not receive the satisfaction survey that is mailed by the manufacturer. If a survey of 65 current customers at a dealership indicates that 55% rate its service as exceptionally good, can the manufacturer estimate the proportion of all customers at this dealership who feel that its service is exceptionally good? Can it estimate the proportion at other dealerships?
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