Question

Hormones can alter the sexual development of animals. This experiment studies the effects of growth hormone (GH) and follicle-stimulating hormone (FSH) on the length of the seminiferous tubules in pigs. The treatments are control, daily injection of GH, daily injection of FSH, and daily injection of GH and FSH. Twenty-four weanling boars are used, four from each of six litters. The four boars in each litter are randomly assigned 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.

- The line of R code you would use to fit the model to the data.

Answer 1

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