Information has been collected on the number of civil disturbances (riots, strikes, operation occupy, etc.) over the past year and on unemployment rate (%) in 10 cities. Are these variables linearly related? The data are presented in the following table. Unemployment Rate (%) 22 15 24 17 19 11 13 12 23 10 Civil Disturbances 8 5 20 15 9 4 9 3 13 6 The coefficient of determination for this data is r = 0.5486 and the regression equation is: y = - 3.5239 + 0.7665r. For part (a), express your answer in percent form (i.e. 3.00% instead of 0.03) and round to 2 decimal places. (a) What percent of the variation in sales cannot be explained due to the other factors? % For parts (b) and (c), round to 4 decimal places. (b) Calculate the correlation coefficient r = (c) What is the slope of the equation? For part (d), round your final answer to 3 decimal places. (d) Predict the number of civil disturbances in a city with 10 unemployment rate