26 15 10 40 10 20 30 36 40 0 5 10 20 32 16 12 40 36 10 0     0.1314     3.04     2.0930     1.7291 The correct value of the test statistic is

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The cost of a university education has increased at a much faster rate than costs in general over the past twenty years. In order to compensate for this, many students work part- or full-time in addition to attending classes. At one university, it is believed that the average number of hours students work per week exceeds 20. A random sample of 20 students was selected and the following values were observed:

26

15

10

40

10

20

30

36

40

0

5

10

20

32

16

12

40

36

10

0



   

0.1314

   

3.04

   

2.0930

   

1.7291

  1. The correct value of the test statistic is
  2.  
  3.  
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