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Information has been collected on the number of civil disturbances (riots, strikes, operation occupy, etc.) over the past year and on unemployment rate (96) in 10 cities. Are these variables linearly related? The data are presented in the following table. Unemployment Rate (36) 13 14 12 18 21 24 17 23 Civil Disturbances 9 12 7 24 18 28 21 22 The coefficient of determination for this data is 1'2 = 0.8185 and the regression equation is: g = 8.7701 + 1.4719m. 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? [3 % For parts (b) and (c), round to 4 decimal places. (b) Calculate the correlation coefficient r = [:J (c) What is the slope of the equation? C] For part (d), round your final answer to 3 decimal places. (d) Predict the number of civil disturbances in a city with 15% unemployment rate.? C]