A sample of 27 construction workers took part in an evaluation drill, resulting in the accompanying data on time (in seconds) to complete the drill: 389 356 359 363 375 424 325 394 402 373 373 370 364 366 364 330 339 393 392 369 374 359 356 403 334 397 352 1. In the data above, what is the calculated mean? * a.360.19 b.380.19 c. 370.19 d. 380.19