In the cafeteria, there are 50 seats, of which, 22 seats are empty and 28 seats are occupied. What is the ratio of occupied seats to empty seats?
14:25
a
11:25
11:14
14:11

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?