QUESTION 2 An experimenter wants to determine the effects of irrigation and fertilizer on the yield of barley. He applies four types of irrigation techniques to the four fields (the whole plots) at random and then applies the three fertilizers to the subplots at random. a) Based on the design above, write the expected mean squares for all model terms. (6 marks) b) If the experiment above is conducted using factorial experiment (two factor factorial experiment in RCBD) with four types of irrigation and three fertilizers, list the steps to conduct this experiment. (4 marks)