Reconsider a previous exercise from Section 5.1 about Medicare audits. Of the 30 small claims, 14 were judged to be overpayments; of the 30 medium claims, 8 were judged to be overpayments. Our research question is this: “Does the chance that the claim is judged to be an overpayment tend to diff er by the size of the claim?” Explain why it is not advisable to use a theory-based approach to answer this research question.