Extra Credit Opportunity The Cheyenne Hotel in Big Sky, Montana, has accumulated records of the total electrical costs of the hotel and the number of occupancy-days over the last year. An occupancy-day represents a room rented for one day. The hotel's business is highly seasonal, with peaks occurring during the ski season and in the summer. Month January February Occupancy-Days 1,736 1,904 2,356 960 360 March April May June 744 Electrical Costs $ 4,127 $ 4,207 $ 5,083 $ 2,857 $ 1,871 $ 2,696 $ 4,670 $ 5,148 $ 2,691 $ 1,588 $ 2,454 $ 3,529 July August September October 2,108 2,406 840 124 November 720 1,364 December Use the above data to calculate the equation of a cost line (Y = a + bx) using least-squares regression. You have 2 options for doing this: Option 1: Calculate the equation of a cost line by hand. See the appendix to Ch. 5 for a tutorial on how to do this. Potential bonus points...10