True or False:

1. The fit of the regression equations yˆ = b0 + b1x + b2x2 and yˆ = b0 + b1x + b2x2 + b3x3 can be compared using the coefficient of determination R2.

2. The fit of the models y = β0 + β1x + ε and y = β0 + β1ln(x) + ε can be compared using the coefficient of determination R2.

3. A quadratic regression model is a special type of a polynomial regression model.

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