please answers Q123:

1. In Random Factor model, (a) the conclusions cannot be extended to similar treatments that were not explicitly considered (b) we should like to be able to extend the conclusions to all treatments in the population, whether or not they were explicitly considered in the analysis. (c) None of above 2. To perform a KruskalWallis test, (a) rst rank the observations ya. in ascending order and replace each observation by its rank. (b) we know the normality assumption is justied. (c) None of above 3. Which of the followings is not correct for the nuisance factor? (a) The nuisance factor is a design factor that probably has an effect on the response, but we are not interested in that effect. (b) Sometimes a nuisance factor is unknown and uncontrolled. (c) Sometimes we don't know that the factor exists, and it may even be changing levels while we are conducting the experiment. ((1) None of above