The results of a search to find the least expensive round-trip flights to Atlanta and Salt Lake City from 14 major U.S. cities are shown in the following table. The departure date was June 20, 2012, and the return date was June 27, 2012.

a. Compute the mean price for a round-trip flight into Atlanta and the mean price for a round-trip flight into Salt Lake City. Is Atlanta less expensive to fly into than Salt Lake City? If so, what could explain this difference?
b. Compute the range, variance, and standard deviation for the two samples. What does this information tell you about the prices for flights into these twocities?

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Round-Trip Cost ($) Departure City Cincinnati Atlanta Salt Lake City 5 465.60 Denver Los Angeles 311.60 384.60 Detroit Philadelphia Washington, D.C 415.60 ami San Francisco Las Vegas Phoenix Dallas 249.60 539.60 455.60 159.60 267.60 333.90