Which of the following is an INCORRECT statement regarding economic models? An economic model is useful if it predicts well, even if its assumptions are not realistic. An economic model is useful even if it predicts with less than100 percent accuracy. An economic model always includes all of the details of the economic world. An economic model is especially useful when dealing with positive economic analysis

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A: Sum= 1200 + 500 ( P/A, 6%, 10 ) + 600 ( P/A, 6%, 10 )         = 1200 + 500 ( 7.360 ) + 600 ( 7.360 )...

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