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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.

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 class=

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Answer:

Juniors Currently Working: 14/51 = 0.27; Not Working but Have Had a Job: 22/51 = 0.43; Never Had a Job: 15/51 = 0.29.

Seniors Currently Working: 30/80 = 0.38; Not Working but Have Had a Job: 40/80 = 0.5; Never Had a Job: 10//80 = 0.13.

There is an association between employment status and grade level. Depending on whether the student is a senior or junior impact the likelihood of their employment status. For instance, more seniors are likely to be currently working than juniors.

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