Solve the Problem $P ( x ) = \frac { 8 ^ { x } e ^ { - 8 } } { x ! }$

question 365

Multiple Choice

Solve the problem.
-A grocery store normally sells 8 jars of caviar per week. Use the Poisson Distribution $P ( x ) = \frac { 8 ^ { x } e ^ { - 8 } } { x ! }$ to find the probability (to three decimals) of selling 3 jars in a week. $( x ! = x \cdot ( x - 1 ) \cdot ( x - 2 ) \cdot \ldots \cdot ( 3 ) ( 2 ) ( 1 ) )$

• A) 0.057
• B) 0.019
• C) 0.086
• D) 0.029

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Definitions:

Sociocultural Perspective

A view that looks at how society and culture shape cognition, behavior, and attitudes, emphasizing social interaction and cultural determinants.

Cultural Influences

The impact of a society's norms, values, practices, and social structures on the thoughts, behaviors, and feelings of its members.

Behavior

The observable actions or responses of an individual or a system.

Observer Bias

occurs when a researcher's expectations, beliefs, or preferences affect the observation and interpretation of data.