Tony began putting together a rectangular puzzle. he completed the top edge and left edge of the puzzle, each piece is a square that has a side length of 2 1/2 centimeters

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.