The horseshoe crab dataset Crabs2.dat at the text website comes from a study of factors that affect sperm traits of males. One response variable is ejaculate size, measured as the log of the amount of ejaculate (microliters)

measured after 10 seconds of stimulation. Explanatory variables are the location of the observation, carapace width (centimeters), mass (grams), color

(1 = dark, 2 = medium, 3 = light), the operational sex ratio (OSR, the number of males per females on the beach), and a subjective condition number that takes into account mucus, pitting on the prosoma, and eye condition (the higher the better). Prepare a report (maximum 4 pages) describing a model-building process for these data. Attach edited software output as an appendix to your report.