Mark Price, the new productions manager for Speakers and Company, needs to find out which variable most alfects the demand for their line of company speakers. He is uncertain whether the unit price of the product or the effects of increased marketing are the main drivers in soles and wants to use regression analysis to figure out which factor dives more demand for its particular market. Pertinent information was collected by an extensive marketing project that lasted over the past 12 years and was reduced to the data that follow: a. Porform a regression anatysis based on these dato using Excel. Note: Negative values should be indicated by a minus sign. Aound your answers to 4 decimal places. c. Predict average yearly speaker sales for Speakers and Company based on the fegression results if the price was $296 per unit and the amount spent on advertising (in thousands) was $395. Note: Enter your answer in thousands. Pound your intermediste calculations and final answer to 2 decimal places