A) Solve 15n > 12n + 18 (2)
b) n is an integer and -2 Write down the possible values of n,
from smallest to largest.
All values must be separated by commas. eg
(3)
.

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.