A security analyst specializing in the stocks of the motion picture industry wishes to examine the relation between the number of movie theater tickets sold in December and the annual level of earnings in the motion picture industry. Time-series data for the last 15 years are used to estimate the regression model

E = a + bN

where E is total earnings of the motion picture industry measured in dollars per year and N is the number of tickets sold in December. The regression output is as follows:

DEPENDENT VARIABLE: E R-SQUARE F-RATIO P-VALUE ON F OBSERVATIONS: 15 0.8311 63.96 0.0001 PARAMETER STANDARD VARIABLE ESTIMATE ERROR T-RATIO P-VALUE INTERCEPT 25042000.0 20131000.0 1.24 0.2369 N 32.31 8.54 3.78 0.0023