Heavy football players: Following are the weights, in pounds, for samples of offensive and defensive linemen on a professional football team at the beginning of a recent year.

Offense:

353

360

338

250

263

360

319

315

301

305

262

320

Defense:

270

256

284

355

326

299

292

305

258

267

277

356

(a) Find the sample standard deviation for the weights for the offensive linemen. Round the answer to at least one decimal place. The sample standard deviation for the weights for the offensive linemen is___________lb

.

(b) Find the sample standard deviation for the weights for the defensive linemen. Round the answer to at least one decimal place. The sample standard deviation for the weights for the defensive linemen is______________lb

.