Two factories blow their whistles at exactly the same time. If a man hears the two blasts exactly 4.2 seconds and 5.9 seconds after they are blown and the angle between his lines of sight to the two
factories is 40.8°, how far apart are the factories? Give your result to the nearest meter. (Use the fact
that sound travels at 344 m/sec.)
A) 2903 meters
B) 3263 meters C) 1329 meters D) 1997 meters

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?