A randomized complete block experiment with four blocks and five treatments was run. There is a single replication of each treatment in every block. Suppose there is a single covariate which has a straight-line relationship with the response.
a. Write a model for this experiment. Make sure to identify all variables and parameters in your model.
b. Indicate how you would test for parallelism among the various lines. What are the degrees of freedom of the F test for parallelism?
c. Indicate how you would perform a test for the effects of treatments adjusted for the covariate.