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The critical path is defined as the most expensive path.( )

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PERT diagrams occasionally need to use dummy activities to preserve the logic.( )

Risk is a rough assessment of whether there may be problems or difficulties developing the use case.( )

Middle managers are highly dependent on information from external sources that supply news of market trends and the strategies of competing corporations.( )

User involvement throughout the systems project is of little importance in the successful development of business information systems.( )

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