The solution design team have determined that the key factors of the system are input factors $A,B,$ and $C.$

Input factor A can be between $100$ and $150$ lbs$.$

Input factor B can be between $2$ and $4$ degrees.

Input factor C can be between $12$ and $20$ psi.

$\backslash$table$[[,$Input A Level,Input B Level,Input C Level,Response$],[$Experiment #$1,-,-,-,11],[$Experiment #$2,+,-,-,40],[$Experiment #$3,-,+,-,25],[$Experiment #$4,+,+,-,18],[$Experiment #$5,-,-,+,32],[$Experiment #$6,+,-,+,30],[$Experiment #$7,-,+,+,28],[$Experiment #$8,+,+,+,20]]$

Calculate the main effect and interaction effects of changing factors.