The probability distribution of a random variable X is 
Compute the mean, variance, and standard deviation of X.
Round your answers to the nearest hundredth, if necessary. 
__________
Var (X) =
__________ 
__________
Definitions:
Predictability
The ability to accurately forecast the future occurrence or behavior of an event based on current or past data.
Conditioned Stimulus
A stimulus that was once neutral but triggers a conditioned response after being associated with an unconditioned stimulus.
Anxiety
A feeling of worry, nervousness, or unease about something with an uncertain outcome, which can become a distressing disorder when excessive.
Unconditioned Stimulus
In conditioning, a stimulus that naturally and automatically triggers a response without prior learning.
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