Do business travelers walk at a different pace than leisure travelers? Researcher Seth B. Young measured the walking speed of business and leisure travelers in San Francisco International Airport and Cleveland Hopkins International Airport. His findings are summarized in the table.
(a) Is this an observational study or a designed experiment? Why?
(b) What must be true regarding the populations to use Welch’s t-test to compare the means?
(c) Assuming that the requirements listed in part (b) are satisfied, determine whether business travelers walk at a different speed from leisure travelers at the α = 0.05 level of significance.

  • CreatedApril 28, 2015
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