Please Help with these.

a. Prepare a forecast for weeks 6 through 10 by using a 4-week moving average. What is the forecast for b. Calculate the mean absolute deviation as of the end of Time-Series Methods 6. Marianne Kramer, the owner of Handy Man Rentals, rents carpet cleaners to contractors and walk-in custom- ers. She is interested in arriving at a forecast of rentals so that she can order the correct quantities of supplies that go with the cleaners. Data for the last 10 weeks are shown here. Week Rentals Week Rentals 1 15 6 20 2 2 16 7 24 24 8 27 4 18 9 18 5 23 10 16 week 11? week 10. a. Use simple linear regression analysis to develop a forecasting model for monthly demand. In this application, the dependent variable, Y, is monthly demand and the independent variable, X, is the b. Use the model to forecast demand for September, October, and November. Here, X = 9, 10, and 11, month. For January, let X = 1; for February, let 1. Demand for oil changes at Garcia's Garage has been as follows: Month Number of Oil Changes January 41 February 46 March 57 April 52 May 59 June 51 July 60 August 62 X = 2; and so on. respectively. A