3. (given the weekly price and quantity (Q): and PX) data in pounds tor L'ooi b'tu ice cream over the past 12 weeks and the price of another icecream avor (-Po) as: a. Use excel regression to estimate the weekly demand for Cool Stuff ice-cream (Use regression in excel to find the estimated demand function: Hint: Enter the data in excel, click on Data Analysis, and use the regression command) and attach the output of the regression estimate