During a bike ride challenge riders have to collect various colored advance each 1/2 mile take a left on red raven eight 1/8 mile i collect a green ribbon and each 1/4 mile they collect the blue heaven which colors of revenge will be collected at the 3/4 mile marker

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.