A sample of 26 offshore oil workers took part in a simulated escapeexercise, resulting in the accompanying data on time (sec) to completethe escape ("Oxygen Consumption and Ventilation During Escape froman Offshore Platform," Ergonomics, 1997: 281-292): 389 356 359 363 375 424 325 394 402373 373 370 364 366 364 325 339 393392 369 374 359 356 403 334 397 a. Construct a stem-and-leaf display of the data. How does it suggest that the sample mean and median will compare?b. Calculate the values of the sample mean and median. [Hint: Ex; = 9638.]c. By how much could the largest time, currently 424, be increased without affecting the value of the sample median? By how much could this value be decreased without affecting the value of the sample median?d. What are the values of x and x when the observations arereexpressed in minutes?
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 ("Oxygen Consumption and Ventilation During Escape from
an Offshore Platform," Ergonomics, 1997: 281-292):
389 356 359 363 375 424 325 394 402
373 373 370 364 366 364 325 339 393
392 369 374 359 356 403 334 397
a. Construct a stem-and-leaf display of the data. How does it suggest that the sample mean and
b. Calculate the values of the sample mean and median. [Hint: Ex; = 9638.]
c. By how much could the largest time, currently 424, be increased without affecting the value of the sample median? By how much could this value be decreased without affecting the value of the sample median?
d. What are the values of x and x when the observations are
reexpressed in minutes?
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