An Airline Wants to Select a Computer Software Package for Its

question 25

Multiple Choice

An airline wants to select a computer software package for its reservation system. Four software packages (1, 2, 3, and 4) are commercially available. An experiment is set up in which each package is used to make reservations for 5 randomly selected weeks and data on the number of passengers that are bumped over a month are collected. (A total of 20 weeks was included in the experiment.) The variability of the number of passengers that are bumped is found to be roughly the same for the 4 packages. The distribution on the number of passengers that are bumped has been found out to be right-skewed for package 1 and 4, left-skewed for package 2 and normal for package 3. Which of the following tests will be the most appropriate to find out if the mean number of passengers being bumped over a month is the same across the 4 packages?

• A) Paired t test
• B) Pooled-variance t test
• C) One-way ANOVA F test for differences among more than two means
• D) Kruskal-Wallis rank test

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Definitions:

Right-Wing Authoritarianism

A personality and ideological framework characterized by submission to authorities, adherence to conventional norms, and hostility towards those who dissent.

Trait of Disidentification

A psychological process where individuals detach their self-esteem from outcomes in a specific domain to protect their overall self-worth.

Ethnocentrism

The belief in the inherent superiority of one's own ethnic group or culture, often accompanied by a disdain for other groups.

Stereotype Threat

The risk of confirming negative stereotypes about one's social group, which can impair performance in a relevant area.