Blackjack The probability distribution of a random variable X is shown below,where X represents the amount of money (in $1,000s)gained or lost in a particular game of Blackjack. 
-{Blackjack Narrative} Find the following values and indicate their units.
a.E(X)
b.V(X)
c.Standard deviation of X
Definitions:
Theory Z
A management philosophy which integrates Japanese and American business practices, emphasizing employee participation, job security, and company loyalty.
Quality Circles
Small groups of employees who regularly meet to discuss and propose solutions to workplace issues, aimed at improving performance and working conditions.
Human Relations Model
A management approach emphasizing the importance of interpersonal relationships and employee morale in achieving organizational objectives.
Social Planning Model
A strategic approach to addressing social issues and problems through organized, participatory planning processes.
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