Suppose that you fit the model E= β 0 + β 1 x + β 2 x 2 to 20 data points and obtained the...

Suppose that you fit the model

E(y) = β₀ + β₁x + β₂x₂

to 20 data points and obtained the accompanying

MINITAB printout.

MINITAB output for Exercise

Regression Analysis: y versus x, x-sq

a. What type of model have you chosen to fit the data?

b. How well does the model fit the data? Explain.

c. Do the data provide sufficient evidence to indicate that the model contributes information for the prediction of y? Use the p-value approach.