Question

(4% = 2% for each part) Given the following discrete probability distribution: x 5 6 7...

(4% = 2% for each part)
Given the following discrete probability distribution:
x 5 6 7 8
P(x) 0.35 0.45 0.15 0.05
a) Calculate the expected value of X (E(X) = μX).
b) Calculate the standard deviation of X (σX )

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