6. (10) Following is the Statkey output showing the relationship between restaurant bill and tip. 15.0 125 10.0 2 7.5 5.0 2.5 40 50 60 Statistic Bill Tip Mean 22.729 3.849 Standard Deviation 12.157 2.421 Sample Size 157 Correlation 0.915 Slope 0.182 Intercept -0.292 a. Based on the output above, write the linear regression equation. b. What variable is y and what variable is x? c. What are the values of n and r? d. If the restaurant bill is wife's age is $60, what is the predicted tip? e. Interpret the slop and write the value of the slop