A sample of 26 offshore oil workers took part in a simulated escape exercise, resulting in the accompanying data on time (sec) to complete the escape: 381 351 356 360 379 423 324 395 400 373 374 372 362 368 365 328 335 393 392 369 376 357 354 406 332 398 (a) Construct a stem-and-leaf display of the data. (Enter numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Stems Leaves 32 33 34 35 36 37 38 39 40 41 42 How does it suggest that the sample mean and median will compare? The display is reasonably symmetric, so the mean and median will be close. The display is positively skewed, so the median will be greater than the mean. The display is negatively skewed, so the mean will be greater than the median. The display is positively skewed, so the mean will be greater than the median. The display is negatively skewed, so the median will be greater than the mean. (b) Calculate the values of the sample mean 7r and median Y. [Hint: 2x, = 9623.] (Round your answers to two decimal places.) SEC x1 Xi H sec (c) By how much could the largest time, currently 4-23, be increased without affecting the value of the sample median? (Enter co if there is no limit to the amount.) By how much could this value be decreased without affecting the value of the sample median? (Enter as if there is no limit to the amount.) (d) what are the values of)? and )7 when the observations are reexpressed in minutes? (Round your answers to two decimal places.) 7 min x1 >