airfares in the United States rose to an all-time high of $375 per ticket. 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 $100. Use Table 1 in Appendix B. a. What is the probability that a domestic airfare is $545 or more (to 4 decimals)? b. What is the probability that a domestic airfare is $255 or less (to 4 decimals)? c. What if the probability that a domestic airfare is between $300 and $500o (to 4 decimals)? d. What is the cost for the 4% highest domestic airfares? (rounded to nearest dollar) or Select your answer
airfares in the United States rose to an all-time high of $375 per ticket. 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 $100. Use Table 1 in Appendix B. a. What is the probability that a domestic airfare is $545 or more (to 4 decimals)? b. What is the probability that a domestic airfare is $255 or less (to 4 decimals)? c. What if the probability that a domestic airfare is between $300 and $500o (to 4 decimals)? d. What is the cost for the 4% highest domestic airfares? (rounded to nearest dollar) or Select your answer
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text:The méan cost of domestic airfares in the United Státes rose to an all-time high of $375 per ticket. 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 $100. Use Table 1 in Appendix B.
a. What is the probability that a domestic airfare is $545 or more (to 4 decimals)?
b. What is the probability that a domestic airfare is $255 or less (to 4 decimals)?
c. What if the probability that a domestic airfare is between $300 and $500 (to 4 decimals)?
d. What is the cost for the 4% highest domestic airfares? (rounded to nearest dollar)
or
Select your answer
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