Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1200 hours 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 more than 16,800 hours. round your answer to four decimal places.

0.8413

Step-by-step explanation:

Step-by-step explanation:

Let x be a random variable that represents the life span of monitors manufactured by TSI Electronics .

Also Monitors manufactured by TSI Electronics have life spans that have a normal distribution with

hours

hours

∵

Then for x=  16,800 hours,

The probability that the life span of the monitor will be more than 16,800 hours. :-

Hence, he probability that the life span of the monitor will be more than 16,800 hours = 0.8413