can some help?

The following example of an RCBD (Randomized Complete Block Design) comes from Oehlert (2000), A First Course in Design and Analysis of Experiments. Oehlert describes the experiment as follows. \"Her-mones can alter the sexual development of animals. This experiment studies the effects of gowth hormone (GH) and follicle-stimulating hormone (F SH) on the length of the seminiferous tubules in pigs. The treatments are control, daily injection of GH, daily injection of F SH, and daily injection of GH and FSH. Twenty-four weanling boats are used, four from each of six litters. The four boars in each litter are randomized to the four treatments. The boars are castrated at 100 days of age, and the length (in meters) of the seminiferous tubules determined as response (data from Swanlund at at. 1995).\" Here is the data exactly as it appears in Oehlert (2000, p. 354): Litter l 2 3 4 5 0 Control 1641 1290 2411 2527 1930 2158 CH 1829 1311 1397 1506 2060 1207 FSH 3395 3113 2219 2667 2210 2625 GH+FSH 1537 1991 3639 2246 1840 2217 Note the treatments have a 2X2 factorial design, with the two factors \"GH\" and \"FSH\" each being at two levels (absent or present). (a) State a model equation for this experiment, dening all parameters in the model equation. (b) State the three testable null hypotheses that would typically be tested for this factorial design. Make sure you specify the hypotheses in terms of the model parameters. (c) Obtain the appropriate ANOVA table and briey summarize your conclusions. You do not need to hand in any interaction plots. but they might be helpful. (d) In litter 6. the boar treated with GH had a tubule length of 120?m and this was the shortest tubule length of any boar in the study! For the model fit in (c), what is the value of the residual for this observation? Show how this value can be obtained using the estimates of the model parameters