Let X Be the Number of Tails That Come Up $E ( X ) = 2$

question 158

Multiple Choice

Let X be the number of tails that come up when a coin is tossed three times. Calculate the expected value of the given random variable X.

• A) \(E ( X ) = 2\)
• B) \(E ( X ) = 3\)
• C) \(E ( X ) = 6\)
• D) \(E ( X ) = 1.5\)
• E) \(E ( X ) = 2.25\)

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Definitions:

Privileged Domains

Privileged domains are areas of knowledge for which the human mind is particularly well-equipped to learn and understand, such as language, spatial relations, and social interactions.

Naïve Psychology

An individual's natural understanding and interpretation of other people's behaviors and mental states.

Event Schemas

Cognitive frameworks consisting of typical sequences of events in familiar contexts, enabling people to predict and interpret everyday situations.