Exercise 5A-5 (Algo) Least-Squares Regression [LO5-11] 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 Units Total Etching Cost 1 5 $ 22 2 7 21 3 10 25 4 5 20 5. 161 28 6 17 32 60 $148 For planning purposes, management would like to know the variable etching cost per unit and the total fixed etching cost per week. Exercise 5A-5 Part 2 (Algo) 2-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. Req 2A Req 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 Req 2A Req 2B Express these estimates in the form Y a + bx. (Round your answers to 2 decimal places.)