A decision support system (DSS) is a computerized system designed to aid in the management and analysis of large data sets. Ideally, a DSS should include four components: (1) a data extraction system, (2) a relational database organization, (3) analysis models, and (4) a user-friendly interactive dialogue between the user and the system. A state highway agency recently installed a DSS to help monitor data on road construction contract bids. As part of a self-examination, the agency selected 151 of the most recently encountered problems that could be traced directly to the DSS and classified each according to the component of origination. Can it be concluded from the data in the table that the proportions of problems are different for at least two of the four DSS components? Test using α = .05.

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DSS Соmрoпеnt 1 2 3 4 Number of Problems 31 28 45 47