Asingle burger contains a mean of 100 g of cooked beef with a standard deviation of 5 g. the restaurane owner claims that new triple burger contains three times as much beef. the table shows a sample of masses from 30 triple burgers. does the sample support the claim at a 95 % confidence level? triple burger beef mass (g) 290 291 295 290 295 292 297 296 290 282 291 294 292 291 289 292 298 294 289 289 296 290 297 290 285 295 294 289 302 287