Table P-21 contains the number of accounts (in thousands) and the assets (in billions of dollars) for
Question:
a. Give the fitted regression function. Is the regression significant? Explain.
b. Test for the significance of the coefficient of the squared term. Summarize your conclusion.
c. Rerun the analysis without the quadratic (squared) term. Explain why the coefficient of the number of accounts is not the same as the one you found for part a.
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