Let the Lifetime of a New Jet Ski Be Represented

question 25

Multiple Choice

Let the lifetime of a new Jet Ski be represented by a lognormal variable, Y = e^X where X is normally distributed. Let the mean of the lifetime of the Jet Ski be six years with a standard deviation of three years. What proportion of the Jet Skis will last nine or more years?

• A) 0.1369
• B) 0.1587
• C) 0.8413
• D) 0.8621

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Definitions:

Higher-order Conditioning

A process in classical conditioning by which a stimulus that's associated with a primary conditioned stimulus also becomes a conditioned stimulus.

Stimulus Discrimination

The ability to differentiate between one stimulus and similar stimuli, ensuring that only the original stimulus triggers the conditioned response in classical conditioning.

Stimulus Discrimination

The ability to differentiate between similar stimuli and respond appropriately to each one.

Conditioned Stimulus

A conditioned stimulus is a previously neutral stimulus that, after being repeatedly paired with an unconditioned stimulus, begins to evoke a conditioned response.