Answer Happy

ha A goverment organization is examining the effectiveness of a program intended to shorten security lines at airports for trusted travelers". For comparison purposes, a sample was obtained of the time in seconds it took passengers not on the program to pass through security at a certain International airport. The accompanying data contain the results. Complete parts a through o below. Click the icon to view the security time data. Se rk Se a Calculate the sample mean and the sample standard deviation for this sample of passenger times The sample mean is seconds (Round nd to two decimal places as needed.) The sample standard deviation is secondi (Round to two decimal places as needed) b. Assume that the distribution of time required to pass through security of this airport is normally distributed. Use the sample data to construct a 99% confidence interval estimate for the average time required to pass through security Tho The 99% confidence interval is secondo - seconds (Round to two decimal places as needed.) c. What is the margin of error for the confidence interval constructed in port b? seconds Fina (Round to two decimal places as needed.)

Х - qy (s) Security Time Data 1 "1 ir 370 205 148 194 220 382 210 361 178 165 327 242 370 234 229 186 392 256 234 301 230 284 148 361 143 314 283 175 223 185 298 191 293 217 149 324 151 242 287 354 261 125 194 304 408 369 263 224 142 246 219 361 an to Eo 300 137 223 309 398 311 37 210 243 129 311 428 325 226 276 178 241 246 370 238 230 220 297 e 299

84 242 271 295 332 219 121 229 132 201 282 380 296 307 272 387 204 272 255 82 277 364 433 309 124 229 321 311 316 261 274 180 240 194 425 209 113 253 137 185 374 229 222 347 208 287 200 322 355 270 323 195 249 341