Question: The estimated cubic regression function relating income to test scores is TestScore = 600.1 + 5.02Income - 0.096Income + 0.00069Incomes. (5.1) (0.71) (0.029) (0.00035)

The estimated cubic regression function relating income to test scores is

The estimated cubic regression function relating income to test scores is TestScore = 600.1 + 5.02Income - 0.096Income + 0.00069Incomes. (5.1) (0.71) (0.029) (0.00035)

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