What is the difference of 3 49 and 2 59? Select one: A. 89 B. 1 19 C. 1 23 D. 2 49

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.