(Data file: walleye) The data in the file walleye give the length in mm and the age in years of a sample of over 3,000 male walleye, a popular game fish, captured in Butternut Lake in Northern...

(Data file: walleye) The data in the file walleye give the length in mm and the age in years of a sample of over 3,000 male walleye, a popular game fish, captured in Butternut Lake in Northern Wisconsin (LeBeau, 2004). The fish are also classified according to the time period in which they were captured, with period = 1 for pre-1990, period = 2 for 1990–1996, and period = 3 for 1997–2000. Management practices on the lake were different in each of the periods, so it is of interest to compare the length at age for the three time periods. Using the von Bertalanffy length at age function (11.22), compare the three time periods. If different, are all the parameters different, or just some of them? Which ones? Summarize your results.