Consider the Following to Answer the Question(s) Below

Multiple Choice

Consider the following to answer the question(s) below:
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:

-The correct value of the test statistic is

A) 0.1314.
B) 3.04.
C) 2.0930.
D) 1.7291.
E) 0.8968.