Miss Mowrey gave out some A grades last trimester. In fact, she gave out 27 As. Her students decided they should work harder, so this trimester there were 1 1/3 of that number. How many As did Miss Mowrey give out this trimester?

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.