The following table gives the result of a random sample of upper level students at Rocky Vista University (the Fighting Prairie Dogs!), along with a mosaic plot.
100.0%
90.0%
80.0%
70.0%
Grade Level
Junior
14
22
15
Employment Status
Currently working
Not working but have had a job
Never had a job
60.0%
Senior
30
40
10
50.0%
40.0%
30.0%
Employment status
Never had a job
Not working but did in the past
. Currently working
20.0%
10.0%
0.0%
Junior
Senior
Grade Level
(a) Calculate the proportion of Juniors that are (1) currently working, (2) not working but have
had a job, and (3) never had a job.