v Q Search Q5 5.2 99 KB Provide an appropriate response. 3) Suppose you pay $2.00 to roll a fair die with the understanding that you will get back $ 4.00 for rolling a 2 or a Q5 5. POF 99 KB 3, nothing otherwise. What is your expected value? Use the binomial distribution to find the desired probability. 4) Merta reports that 74% of its trains are on time. A communittee group questions this parameter. In a random sample of 60 trains 38 of them arrived on time. a) Use a binomial distribution to find the probability of getting a random sample where among 60 trains, 38 or fewer arrive on time, if the overall ontime rate is 74%. b) Based on the result, do you to believe or disbelieve that the "on-time" rate of 74% ? e corres