A study examining the health risks of smoking measured the cholesterol levels of people who had smoked for at least 25 years and people of similar ages who had smoked for no more than 5 years and then stopped. Create appropriate graphical displays for both groups, and write a brief report comparing their cholesterol levels. Here are the data:

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Smokers Ex-Smokers 225 211 209 284 250 134 300 258 216 196 288 249 213 310 250 200 209 280 175 174 328 225 256 243 200 160 188 321 213 246 225 237 213 257 292 232 267 232 216 200 271 227 216 243 200 155 238 163 263 216 271 230 309 192 242 249 183 280 217 305 242 267 243 287 217 246 351 217 267 218 200 280 209 217 183 228