Automobile insurance appraisers examine cars that have been involved in accidental collisions and estimate the cost of repairs. An insurance executive claims that there are significant differences in the estimates from different appraisers. To sup-port his claim, he takes a random sample of 25 cars that have recently been damaged in accidents.
Three appraisers then estimated the repair costs of each car. The estimates were recorded for each appraiser. From the data, can we conclude that the executive’s claim is true?