Automobile Repair Cost Narrative
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 support his claim, he takes a random sample of six cars that have recently been damaged in accidents. Three appraisers then estimate the repair costs of all six cars. The data are shown below.
Estimated Repair Cost
-Refer to Automobile Repair Cost Narrative. Can we infer at the 5% significance level that the executive's claim is true? Provide a justification for your conclusion.

Question

Automobile Repair Cost Narrative
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 support his claim, he takes a random sample of six cars that have recently been damaged in accidents. Three appraisers then estimate the repair costs of all six cars. The data are shown below.
Estimated Repair Cost 
-Refer to Automobile Repair Cost Narrative. Can we infer at the 5% significance level that the executive's claim is true? Provide a justification for your conclusion.

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The Answer of Automobile Repair Cost Narrative
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 support his claim, he takes a random sample of six cars that have recently been damaged in accidents. Three appraisers then estimate the repair costs of all six cars. The data are shown below.
Estimated Repair Cost 
-Refer to Automobile Repair Cost Narrative. Can we infer at the 5% significance level that the executive's claim is true? Provide a justification for your conclusion.