text: statistics homework? i need help with statistics probabilities questions....   the new transportation bill has a 90 % chance of passing if the democrats win the election. the democrats have a 60 % chance of winning the election. what is the probability that the democrats will win and the bill will pass? you are trying to find the probability that democrats win, and the bill passes.  let a be the event that the demos win, and b be the event that the bill passes.  also recognize that this is a conditional probability question. we know the following info:   p(a) = .6   "democrats have a 60 %" p(b|a) = .9 "90 % chance of passing if the democrats win " p(a and b)  "what the question wants you to find" the conditional prob formula says that   p(a and b) = p(a) x p(b|a) = .9 x .6 = .54  so there is a 54% of both things happening