a.	Use the data in Table 9.3 to compute a five-day moving average for Computers, Inc. (Do not round intermediate calculations. Round your answers to 3 decimal places.)

Trading Day	Five Day Moving Avg.	Trading Day	Five Day Moving Avg.
Days 1-5	20.65	Days 19-23	19.23
Days 2-6	21.13	Days 20-24	21.05
Days 3-7	21.50	Days 21-25	22.05
Days 4-8	21.90	Days 22-26	23.18
Days 5-9	22.13	Days 23-27	24.13
Days 6-10	22.68	Days 24-28	25.13
Days 7-11	23.18	Days 25-29	26.00
Days 8-12	23.45	Days 26-30	26.80
Days 9-13	23.38	Days 27-31	27.45
Days 10-14	23.15	Days 28-32	27.80
Days 11-15	22.50	Days 29-33	27.90
Days 12-16	21.65	Days 30-34	28.20
Days 13-17	20.95	Days 31-35	28.45
Days 14-18	20.28	Days 32-36	28.65
Days 15-19	19.38	Days 33-37	29.05
Days 16-20	19.05	Days 34-38	29.25
Days 17-21	18.93	Days 35-39	29.00
Days 18-22	19.28	Days 36-40	28..75

b.	Identify buy or sell signals indicating the day on which such signals are identified. Also indicate buying or selling price. (Do not round intermediate calculations. Round your answers to 3 decimal places.)

Action	Day	Price
sell	12	?
buy	21	?
sell	33	?

Just need help on problem B, in the last column.