A regression model between sales (y in $1,000), unit price (x1 in dollars) and television advertisement (x2 in dollars) resulted in the following function: = 73X1+5x2 For this model, Sum Squares of Regression = 4000, Sum Squares of Errors = 1000, and the sample size is 30. What's R-squared value and the Adjusted R-squared value? R-squared is 75% and Adjusted R-squared is 73.15% R-squared is 80% and Adjusted R-squared is 77.69% O R-squared is 75% and Adjusted R-squared is 80% R-squared is 80% and Adjusted R-squared is 78.5%