Required information George Caloz & Frres, located in Grenchen, Switzerland, makes luxury custom watches in small lots. One of the company's products, a platinum diving watch, goes through an etching process. The company has recorded etching costs as follows over the last six weeks: Week 2 3 4 5 Units 12 9 14 8 10 13 Total Etching Cost $ 27 $ 20 $ 31 $ 20 $ 23 $ 30 $ 151 6 66 For planning purposes, management would like to know the variable etching cost per unit and the total fixed etching cost per week. -a. Using the least-squares regression method, estimate the variable etching cost per unit and the total fixed etching cost per week. 2-b. Express these estimates in the form Y = a +bX. Required 2A Required 2B Using the least-squares regression method, estimate the variable etching cost per unit and the total fixed etching cost per week. (Round your answers to 2 decimal places.) Fixed etching cost per week Variable etching cost per unit Required 2A Required 2B Express these estimates in the form Y = a + bx. (Round your answers to 2 decimal places.) Y=