1. An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F.
The means plot below was obtained.
This plot suggests
A. interaction is present.
B. both the ovens and temperature were important effects.
C. there are no important effects.
2. An experiment was performed to investigate lifetime of a component exposed to high heat. Three different oven types were used at either 550°F or 600°F. SPSS partial output is below.
The P-value for the interaction term in the model is
A. more than 0.10.
B. between 0.05 and 0.10.
C. less than 0.05.