Assume the following daily closings for the Dow Jones Industrial Average: Day 1 2 3 4 4 56 5 6 7 8 9 10 11 12 DJIA 13,020 13,100 13,175 13,110 13,095 13,100 Day 7 8 b. Assume that the index on Day 13 closes at 13,335. Would this signal a buy or sell decision? This would signal a -Select- decision. 9 10 222 a. Calculate a four-day moving average for Days 4 through 12. Round your answers to two decimal places. DayMoving average 11 12 DJIA 13,220 13,160 13,240 13,305 13,240 13,350