LENGTH 20 15 0 1 1 2 3 5 FERT Determine whether the equal variance assumption seems to be reasonable. a) Yes, the widths of all the boxes are the same. b) No, the data need to be log-transformed before conducting the ANOVA. c) No, the center lines for fertilizers three and four are higher than one and two. d) Yes, the spreads of the four boxplots appear similar enough to satisfy the assumption. e) No, the data probably need to be re-expressed before conducting the ANOVA.