Now that the new models are available, a car dealership has lowered the prices on last year’s models in order to clear its holdover inventory. With prices slashes, a salesman estimates the following probability distribution of X, the total number of cars that he will sell next week:
X P(X)
0 0.05
1 0.15
2 0.35
3 0.25
4 0.20
What is the variance of the project?
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