Find the Mean of the Binomial Random Variable

question 76

Multiple Choice

Find the mean of the binomial random variable. Round to two decimal places when necessary.
-The probability is 0.3 that a person shopping at a certain store will spend less than $20. For groups of size 16, find the mean number who spend less than $20.

• A)14
• B)11.2
• C)6
• D)4.8

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Definitions:

Depth Information

Visual cues that allow individuals to perceive the distance or depth of objects within a scene.

Connectionist Model

A cognitive model based on the concept that mental phenomena can be explained by interconnected networks of simple units.

Word Superiority Effect

The phenomena where letters are more easily recognized and processed when they are part of a word rather than when they are seen in isolation or in a string of unrelated letters.

Direct Perception

A theory of perception, proposed by Gibson, holding that information in the world is “picked up on” by the cognitive processor without much construction of internal representations or inferences. The emphasis is on direct acquisition of information.