An experiment was conducted to determine whether either firing temperature or furnace position affects the baked density of a carbon anode. The data are as follows:

Position	TEMPERATURE
500	1000	1500
1	590	1150	1530
575	1185	1465
593	1148	1531
589	1105	1488
2	1100	920	520
1002	930	620
995	999	652
990	950	625
3	410	798	1005
438	867	978
437	810	1011
431	909	1049

1. Produce Duncan's test for only the 2 main factors and Interpret results from Duncan's Test
2. Find how many replications are needed for a Betha = 0.15 or less (variance estimate =MSE)
3. Final conclusion: What is the best combination? Why? What else?