Speedy Oil change has recorded the number of maintenance check ups on a customer's car during the previous year and the amount of repair bills on that car for the previous year. The data set is shown below. 2 3 4 5 5 1 6 3 475 200 500 130 260 SumXY = 4010 Customer 1 Number of maintenance check ups 2 Repair Bill totals Given: n = 5 SumX = 17 SumY = 1565 m = -76.22 b= 572.15 a) Calculate the Standard Error of Estimate b) Interpret the Standard Error of Estimate (1 marks) (2 marks) SumX = 75 Sumy = 600,125