The World Summit Wing Hotel in China is Beijing’s tallest hotel and hosts the Vertical Run. There are 81 floors, 330 meters, and 2041 steps to reach the roof. Independent random samples of men’s and women’s times (in minutes) from the 2013 run were obtained.
A sailboat manufacturer has two machines for constructing main mast poles with diameter designed to be 76.2 mm. Small variability in production is very important to ensure boat control and safety. Independent random samples of mast poles produced on each machine were obtained, and the diameter of each was carefully measured. The summary statistics were as follows:
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