A passenger metal detector at Chicago’s Midway Airport gives an alarm 0.5 times a minute. (a) Find the median waiting time until the next alarm. (b) Find the first quartile of waiting time before the...

A passenger metal detector at Chicago’s Midway Airport gives an alarm 0.5 times a minute. (a) Find the median waiting time until the next alarm. (b) Find the first quartile of waiting time before the next alarm. (c) Find the 30th percentile waiting time until the next alarm. Show all calculations clearly.