What is the following product?
(2-17 +3-16) (5-/2 +4-/3)
6/10 + 18/2+42
08/10+30-/2 +68
7./14+/21 + 18-13 +21.12
10./T4+8/21+30-/3+38-12

You were told that the amount of time lapsed between consecutive trades on the new york stock exchange followed a normal distribution with a mean of 15 seconds. you were also told that the probability that the time lapsed between two consecutive trades to fall between 16 to 17 seconds was 13%. the probability that the time lapsed between two consecutive trades would fall below 13 seconds was 7%. what is the probability that the time lapsed between two consecutive trades will be between 14 and 15 seconds?