What does it mean if two things are negatively correlated?
A) The dependent variable is always moving in the negative direction.
B) As one thing decreases, the other also decreases.
C) If one thing increases by x, the other increases by x – 1.
D) As one thing decreases, the other increases.

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.