The following data represent the number of certain computer system sold per day at a local computer shop and their prices (in hundreds of dollars). Use a computer to answer the following questions (round to two decimal places): I. The simple regression equation is. The letter associated with the correct answer is a) Y=19.50.44X b) Y=29.790.73X c) Y=32.210.79X d) Y=37.460.94X e) None of the above II. Estimate the number of units sold if the price is 3,600 dollars. The letter associated with the correct answer is a) 3.77 b) 4.24 c) 5.42 d) 6.43 e) None of the above III. Find error \# 4. The letter associated with the correct answer is a) -0.05 b) 0.58 c) 1.11 d) 1.44 e) None of the above