Monitors manufactured by TSI Electronics have life spans that have a normal distribution with a variance of 4,000,000 and a mean life span of 18,000 hours. If a monitor is selected at random, find the...

Monitors manufactured by TSI Electronics have life spans that have a normal distribution with a variance of 4,000,000 and a mean life span of 18,000 hours. If a monitor is selected at random, find the probability that the life span of the monitor will be less than 20,200 hours. Round your answer to four decimal places.