A Normal Distribution Has a Mean of µ = 70

question 40

Multiple Choice

A normal distribution has a mean of µ = 70 with σ = 12.If one score is randomly selected from this distribution,what is the probability that the score will be less than X = 55?​

• A)​0.3944
• B)​0.1056
• C)​0.8944
• D)​0.7888

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Definitions:

Original CS

In classical conditioning, the original conditioned stimulus that is neutral at first but becomes associated with an unconditioned stimulus to elicit a conditioned response.

Extinct CR

The process where a conditioned response is reduced or eliminated because the conditioned stimulus is no longer paired with the unconditioned stimulus.

Reconditioning

The process of rebuilding or restoring mental and physical conditioning through therapeutic, fitness, or psychological interventions.

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a period of no exposure to the conditioned stimulus.