The mean cost of domestic airfares in the United States rose to an all­time high of $385per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares werebased on the total ticket value, which consisted of the price charged by the airlines plusany additional taxes and fees. Assume domestic airfares are normally distributed with astandard deviation of $110.a. what is the probability that a domestic airfare is $550 or more?b. what is the probability that a domestic airfare is $250 or less?c. what is the probability that a domestic airfare is between $300 and $500?

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The mean cost of domestic airfares in the United States rose to an all­time high of $385
per ticket (Bureau of Transportation Statistics website, November 2, 2012). Airfares were
based on the total ticket value, which consisted of the price charged by the airlines plus
any additional taxes and fees. Assume domestic airfares are normally distributed with a
standard deviation of $110.
a. what is the probability that a domestic airfare is $550 or more?
b. what is the probability that a domestic airfare is $250 or less?
c. what is the probability that a domestic airfare is between $300 and $500?

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