You want to paint one wall in your room your favorite color. Your parents told you that you can paint it, but you have to
pay for the paint. The wall you want to paint is a 10 feet long
and 7 feet high rectangle. The paint you want to use is $3
per square foot. How much will it cost to paint the wall?
20 ?

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?