Astudent notices in the table below that as the x-value increases by 5, the y-value decreases by 2. because there is a pattern, the student has determined that, x is proportional to y. do you agree with the student’s claim? why or why not?

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.