1. Independent random samples of professional football and basketball players gave the following information. Assume that the weight distributions are mound-shaped and symmetric. At the 99% level of condence, do professional football players tend to have a higher population mean weight than professional basketball players? Weights (in lb) of pro football players: an; m = 21 246 262 255 251 244 276 240 265 257 252 282 256 250 264 270 275 245 275 253 265 271 Weights (in lb) of pro basketball players: an; n; = 19 202 200 220 210 193 215 221 216 223 207 225 208 195 191 20? 196 182 193 201