d) Joy Company manufactures a high quality pipes in two departments: 1 and 2 Materials are introduced at various points during work in department 1 . Affer products in department 1 are completed, the materials are transferred into department 2 in which the pipe is formed. Materials are accounted foe in the department on the basis of Kilograms. Conversion costs are incurred evenly during the process. Selected data relating to the department 1 during June 2021 are given below: Page 2 of 5 Rey. Prepare a production-cost report for department 1 using Weighted Average Method (10 Marks) QUESTIONTWO GOTAL.15 MARKS a) The total maintenance costs and machine hours of Omega lid for 8 periods is given as follows; requirea Based on the above data, establish the cost function using i. High low method (3 Marks) ii. Least squares method (6 Marks) iii. Using the relationship represented by the regression model in in above, determine the maintenance costs of 90 machine hours. (2 Marks)