A dance club hires two different DJ's to play music on a Friday night. The hip hop DJ charges $100 per hour, while the rap DJ charges $50 per hour. The club can spend a maximum of $800, and they want both types of music played. Let "x" represent the number of hours of hip hop and let "y" represent the number of hours of rap

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?