Luis is going to receive $20,000 six years from now. soo lee is going to receive $20,000 nine years from now. which one of the following statements is correct if both luis and soo lee apply a 7 percent discount rate to these amounts?

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.