Events in Europe in 2014 raised awareness that sometimes zoos euthanize animals that are not appropriate for breeding (http://www.cnn. com/2014/02/10/world/europe/denmark-zoo-giraffe/ ). People often claim that castration would be a solution instead. When I worked at CARE, a baboon sanctuary (http://www.primatecare.org_), the staff there said that male baboons often lost a large amount of muscle mass after castration so this procedure isn't without risk. Those observations were anecdotal however and maybe they get bigger sometimes instead. Imagine that we conduct a study in which we randomly assign sets of male baboons into two groups (castration and control) and measure their body masses 6 months later. Imagine we collect the following mass data (in Kg) from each set of baboons Control Castration 30.08 29.64 32.56 33.23 27.03 30.65 32.55 28.87 28.25 31.37 32.25 32.24 29.96 28.65 29.51 31.73 33.24 33.57 29.23 27.44 33.56 If we wished to know whether we could do a homoscedastic t test (or have no choice and must do a heteroscedastic test) we need to do a preliminary F ratio test Conduct a F ratio test. (Use the F tables online for the critical value). Report non-integer values to closest 0.001. Calculate the following values: Q11-14. df(num) = ? df(den) = ? Fcalc = ? Forit (0=0.05) = ? Perform a two-tailed t test of the data. If the results above allow a homoscedastic test to be used, do that, otherwise perform a heteroscedastic t test. Report values to closest 0.001, but round of to the appropriate whole number if you use a heteroscedastic t test. Calculate the following values: Q15-17. df = ? tcalc = ? tcrit (a=0.05) = ? Q18. Choose the statement that best matches the conclusion of your t test. Your choices will be: The male baboons in the castration treatment have a significantly smaller mean mass than the control males (p