When estimating the selling price of a used sedan as a function of its age using the model Price = β0 + β1Age + , a researcher gets the following ANOVA results:

a. How many observations did the researcher use?
b. What is the standard error of the estimate?
c. Calculate and interpret the coefficient ofdetermination.

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ANOVA df SS Regression 199.93 199.93 87.80 Residual140.992.28 Total MS F Significance 2.41E-08 19 240.92