The average length ot'tresh water hake fish [ in cm) were compared for four different feed types At B. C. D at four different research stations in [1. IL 111. W] as blocks. Each feed type was randomly assigned to a pond at each location and the average length of fish in each pond was recorded. The results of the experiment are shown in the table below. Research station \"-11- (a) Identify the experimental units for this study (I) {h} Perform a two-way Analysis of variance to test if data provide sufficient evidence to indicate that the individual effect of Feed type and Research Station is different on the length of hake fish. [IS]