The manager of a chain of furniture stores believes that experience is the most important factor in determining the level of success of a salesperson. To examine this belief he records last month's sales and the years of experience for 30 randomly selected salespeople. The linear regression output to predict Monthly Sales (in $1,000's) based on Years of Experience is:

SUMMARY OUTPUT Regression Statistics Multiple R 0.6921 R Square 0.479 Observations 30 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 18.5 4.608 4.017 0.000401 9.1 27.9 Years of Experience 1.82 0.3587 5.074 0.000023 1.09 2.55