The Airline Industry Defines "No-Shows" as Passengers Who Have Purchased

question 106

Multiple Choice

The airline industry defines "no-shows" as passengers who have purchased a ticket but fail to arrive at the gate on time for departure.United Airlines operates many flights from Philadelphia to Dallas.The table below represents the observed number of no-shows that occurred on a random sample of 120 flights between Philadelphia and Dallas this year,and experienced the no-show proportions last year. United Airlines would like to know if the proportions of no-shows has changed between last year and this year on flights between these two cities using α = 0.05.The test statistic for this sample is ______.

• A) 4.28
• B) 6.19
• C) 7.50
• D) 9.33

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Definitions:

Carbon Dioxide

A gas that is both colorless and odorless, created through the combustion of carbon and organic materials as well as during the process of respiration, which is then utilized by plants during photosynthesis.

Erythrocyte

A red blood cell, responsible for carrying oxygen throughout the body.

Erythropoiesis

The process through which new red blood cells are produced in the bone marrow, a critical process for maintaining adequate oxygen transport in the blood.

Erythropoietin

A hormone produced mainly by the kidneys, stimulating the production and maintenance of red blood cells in response to low oxygen levels in tissues.