When a model has two explanatory variables, and the effect of one variable on the response depends on the value of the second variable, we say that explanatory variables do which of the following? O a. Magnify O b. Conflict O c. Interact O d. InterdependWhat defines a factorial design? O a. All combinations of two or more factors are investigated. O b. Three or more factors are investigated. O c. Two or more factors are investigated. O d. All combinations of three or more factors are investigated.The linear model for a factorial design with two categorical explanatory variables (or factors) called A and B is which of the following (excluding the error term)? O a. RESPONSE = CONSTANT + A + B + A*B O b. RESPONSE = A + B + A*B O c. RESPONSE = CONSTANT + A + B O d. RESPONSE = A*BThe interaction plot shown most likely represents which ofthe following? Assume that overlapping error bars indicate no effect. Low salinity High salinity Size of offspring Low High temp temp :I_I: a. An effect of salinity but no effect of temperature and no interaction i': b. Effects of salinity and temperature and an interaction :I_I: c. Effects of salinity and temperature but no interaction :1") cl. An effect of temperature but no effect of salinity and no interaction The interaction plot shown most likely represents which of the following? Assume that overlapping error bars indicate no effect. Low salinity Size of offspring High salinity Low High temp temp O a. Effects of temperature and salinity and an interaction O b. Effects of temperature and salinity but no interaction O c. An effect of temperature and an interaction but no effect of salinity O d. An effect of salinity and an interaction but no effect of temperature