The mean unemployment rate in March of each year from 1992 to 2002 is x = 5.45, with a standard deviation of s_x = 1.1. The mean unemployment rate in August of each year for the same time frame is = 5.72, with a standard deviation of s_y = 1.4. The correlation coefficient is r = 0.95. Part A: Find the equation of the least-squares regression line for predicting August unemployment rate from March's unemployment rate. Show your work. (3 points) Part B: Use the regression line to predict the unemployment rate if March's rate is 5.2. Show your work. (3 points) Part C: Find and interpret r-squared. (4 points)