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

question 47

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 proportion of no-shows has changed between last year and this year on flights between these two cities using α = 0.05. The conclusion for this hypothesis would be that because the test statistic is ________.

• A) Reject the null hypothesis, we cannot conclude that the proportions for no-shows has changed from last year to this year
• B) Reject the null hypothesis, we can conclude that the proportions for no-shows has changed from last year to this year
• C) Do not reject the null hypothesis, we cannot conclude that the proportions for no-shows has changed from last year to this year
• D) Do not reject the null hypothesis, we can conclude that the proportions for no-shows has changed from last year to this year

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Definitions:

Neurotransmitters

Chemical messengers that transmit signals across synaptic gaps between neurons, influencing a variety of mental and physical functions.

Synaptic Cleft

The small gap between neurons, across which neurotransmitters move to transmit information.

Terminal Buttons

The small bulblike structures at the end of dendrites that release neurotransmitters and facilitate communication between neurons.

Cell Membrane

A biological membrane that separates the interior of all cells from the outside environment, controlling the movement of substances in and out of cells.