An Urn Contains 12 Balls, Five of Which Are Red

question 56

Multiple Choice

An urn contains 12 balls, five of which are red. Selection of a red ball is desired and is therefore considered to be a success. If three balls are selected, what is the expected value of the distribution of the number of selected red balls?

• A) 0.4167
• B) 0.8333
• C) 0.5833
• D) 1.2500

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Definitions:

Intergroup Competition

A situation in which groups compete against one another for resources, recognition, or dominance, often leading to increased in-group cohesion and out-group discrimination.

Ingroup Favoritism

The tendency to favor members of one's own group over those from different groups.

Stereotype Threat

The risk of confirming negative stereotypes about one's group, which can impair performance.

Intellectual Performance

The efficiency or skill level shown by an individual in tasks that require cognitive effort, such as problem-solving, abstract thinking, and understanding complex ideas.