Use the Following

Multiple Choice

Use the following
Data were collected on the age (in years) and price (in thousands of dollars) of a random sample of 25 used Hyundai Elantras. A scatterplot of the data (with regression line) and computer output from a regression analysis are provided.
Use three decimal places when reporting the results from any calculations, unless otherwise specified.
The regression equation is Price = 15.3 - 1.71 Age

S = 1.37179 R-Sq = 88.9% R-Sq(adj) = 88.4%
Predicted Values for New Observations


-What are the degrees of freedom for constructing a confidence interval for, or performing a test about, the population slope?

A) 25
B) 24
C) 23
D) 22