You were told that the amount of time elapsed between consecutive trades on a foreign stock exchange market followed a normal distribution with a mean of 15 seconds. You were also told that the probability that the time elapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. The probability that the time elapsed between two consecutive trades would fall below 13 seconds was 7%. a. What is the probability that the time elapsed between two consecutive trades will be longer than 17 seconds? 2 b. What is the probability that the time elapsed between two consecutive trades will be between 13 and 14 seconds? c. What is the probability that the time elapsed between two consecutive trades will be between 15 and 16 seconds? d. The probability is 80% that the time elapsed will be longer than how many seconds?