Batareau et al. (2011) compared four nonlinear growth functions in modelling body length and mass size-at-age data for the grizzly bear (Ursus arctos) in the Northwest Territories and Nunavut. The mature adult body mass for a male bear based on data from 119 bears was estimated to have a mean of 209 kg with a standard deviation of 57 kg based on the von Bertalanffy growth model. Treat these statistics as if they were population parameters. (Sec. 5.2) Batareau TM, Cluff HD, Larter NC (2011). Body length and mass growth of the brown bear (Ursus arctos) in northern Canada: model selection based on information theory and ontogeny of sexual size dimorphism. Canadian Zoological Journal, 89: 1128-1135. Find the probability that a mature male grizzly bear would have a body mass less than 225 kg. . Find the body mass m of mature male grizzly bears such that only 25% of the body mass falls above m for this population in northern Canada. b.