Step 5: Now, apply the Pythagorean theorem to triangle LNM to find NM, and round to the nearest hundredth.
(LN)2 + (NM)2 = (LM)2

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.