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A government 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 c below. Click the icon to view the security time data. ond htend prog a. Calculate the sample mean and the sample standard deviation for this sample of passenger times. The sample mean is seconds. 16 (Round to two decimal places as needed.) The sample standard deviation is seconds. (Round to two decimal places as needed.) ean- b. Assume that the distribution of time required to pass through security at this airport is normally distributed. Use the sample data to construct a 99% confidence interval estimate the average time required to pass through security The 99% confidence interval is seconds- seconds. (Round to two decimal places as needed.) ne. c. What is the margin of error for the confidence interval constructed in part b? e= + seconds (Round to two decimal places as needed.) nded e fligt

This This - X Security Time Data am cer r compe Complet 0 370 205 222 382 211 361 231 286 149 355 142 319 187 392 255 235 301 137 222 311 400 311 147 191 177 243 289 355 259 124 191 304 411 364 285 309 427 328 229 278 179 284 175 224 185 297 193 295 216 149 320 152 164 331 245 376 232 232 299 222 143 245 215 357 239 245 374 240 230 224 298 urity a 99% in 209 242 129 298 Print Done MacBook Air 00 DD F6 F7 F8 FO A &

This This - X Security Time Data Em er Ir compl Complet 242 129 298 241 219 230 224 298 296 229 132 197 th 149 320 152 84 328 281 380 203 259 360 229 311 272 421 114 184 221 287 267 196 297 270 82 307 125 318 180 211 254 374 229 278 179 272 119 309 274 389 277 436 324 262 242 195 137 229 urity a 99% 343 207 Hin 198 320 249 316 352 336 Print Done 4 MacBook Air DII DD ca FZ F FB F &