The Probability That Someone Will Prefer Coke Over Pepsi Is

question 36

Multiple Choice

The probability that someone will prefer Coke over Pepsi is 0.56.A researcher asked 90 people which soda pop they preferred, and used the normal approximation to the binomial with a correction for continuity, what would be the standard deviation used in the calculation?

• A)4.7
• B)22.2
• C)50.4
• D)39.6
• E)22.5

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Definitions:

Conditioning

Conditioning is a process in psychology in which a response becomes more frequent or more predictable in a given environment due to reinforcement.

Behavioral Contrast

A phenomenon in operant conditioning where the rate of response to one stimulus changes when the reinforcement conditions are modified for another stimulus.

Congruency Effect

A phenomenon where the reaction time is faster and accuracy is higher when the properties of a stimulus are in harmony with its response.

Negative Reinforcement

The strengthening of a behavior by removing or avoiding a negative outcome or aversive stimulus.