QUESTION 3 The probability distribution of the number of daily network blackouts is given by 2 P(X=x) 0 0.5 1 0.3 0.2 Find the variance of the number of network blackouts. QUESTION 6 Consider two events A and B from the same sample space S. Which of the following statements is not true: a) If A and B are independent, then P(A) = P(AB) b) If A and B are mutually exclusive events, then PAUB) = P(A) + P(B) c) If A and B are collectively exhaustive events, then PLAN B) = 1 d) The union of A and its complement is the sample space S: (. AU= 5) b) a