Most Major Airlines Allow Passengers to Carry Two Pieces of Luggage

question 127

Multiple Choice

Most major airlines allow passengers to carry two pieces of luggage (of a certain maximum size) onto the plane. However, their studies show that the more carry-on baggage passengers have, the longer it takes to unload and load passengers. One regional airline is considering changing its policy to allow only one carry-on per passenger. Before doing so, it decided to collect some data. Specifically, a random sample of 1,000 passengers was selected. The passengers were observed, and the number of bags carried on the plane was noted. Out of the 1,000 passengers, 345 had more than one bag. Suppose the airline also noted whether the passenger was male or female. Out of the 1,000 passengers observed, 690 were males. Of this group, 280 had more than one bag. Using this data, obtain and interpret a 95% confidence interval estimate for the proportion of male passengers in the population who would have been affected by the one-bag limit.

• A) (0.2815, 0.5124)
• B) (0.3361, 0.4712)
• C) (0.3692, 0.4424)
• D) (0.3814, 0.4125)

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Definitions:

Oligopoly

A distinct form of market where only a few companies have significant influence over industry prices and competition.

Herfindahl Index

A measure of market concentration used to determine the competitive landscape by summing the squares of the market shares of all firms in the industry.

Market Shares

The segment of a market dominated by a specific company or product, usually represented as a percentage.

Concentration Ratio

A measure of the total output produced in an industry by a given number of firms, usually the largest in the industry, indicating the level of market competition.