Car Sales The Joint Probability Distribution of Variables X and Y Is

question 232

Essay

Car Sales
The joint probability distribution of variables X and Y is shown in the table below.Rebecca and Rachel are car salespeople.Let X denote the number of cars that Rebecca will sell in a month,and let Y denote the number of cars Rachel will sell in a month. ​ ​
-{Car Sales Narrative} Verify that V(X + Y)= V(X)+ V(Y).Did you expect this result? Why?

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