a) A survey was done on the loan defaulters at a city bank. A sample of size 5 was selected for each teller and results recorded as shown below: Loan amount in thousands of shillings Teller 1 2 3 4 5 1 55.4 60.3 57.4 59.5 76.1 2 57.1 75.6 55.1 65.3 66.2 3 33.7 41.4 46.5 42.7 43.8 4 42.4 43.2 40.2 38.7 39.2 5 50.3 52.5 60.2 57.1 59.7 6 75.2 80.3 85.4 72.7 80.4 7 65.2 75.7 66.4 77.6 68.1 8 66.2 70.3 65.1 66.3 75.4 Construct R-chart and x-chart. Comment on your results. b) The values of three variables x1, x2,y are given as shown in the table: (11 marks) y 6 7 8 7 9 10 x 6 9 7 8 5 6 x2 8 10 5 6 7 8 i) (7 marks) Determine the multiple regression equation. Find y.x = 10, x = 8|