X Is a Normally Distributed Random Variable with a Mean

question 58

Multiple Choice

X is a normally distributed random variable with a mean of 9.0 and a standard deviation of 3.00. Find the value x such that P(X < x) is equal to 0.86. (Note: the diagram is not necessarily to scale.)

• A) 12.24
• B) 10.47
• C) 13.95
• D) 9.00

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Definitions:

Habituation

The psychological process through which an individual becomes accustomed to a stimulus and hence reacts less strongly over time.

Stimulus

Any external event or circumstance that provokes a sensory or behavioral response in an organism.

Operant Conditioning

Learning in which changes in behavior are shaped by the consequences of that behavior, thereby giving rise to new and more complete behaviors.

Phonemes

The smallest unit of sound in a language that can distinguish one word from another.