Refer to Exercise 14.20.
a. Test for an interaction between the effects of Mn and Cu on soybean yield. Use α = .05.
b. What level of Mn appears to produce the highest yield?
c. What level of Cu appears to produce the highest yield?
d. What combination of Cu€“ Mn appears to produce the highest yield?
In exercise

Transcribed Image Text:

Mn 80 110 Cu Mean 1558 2.003 2.490 2.830 1,578 2,033 2,470 2,81 2215 1,590 2,020 2620 2,860 1,610 205 2,632 ,84 2,2780 1,5582,003 2,490 2,830 1550 2.010 690 2,910 2255.1 1328 2,010 ,887 2.960 1427 2,0312,832 2,941 2,302.0 Mn Mean 524.9 2,020. 2,638.9 2872.8 2,264.2