A teaching assistant has selected a random sample of

A teaching assistant has selected a random sample of students in a statistics class and compared the quiz performance of two groups within this sample: one group of students who regularly attended lectures and one group who did not regularly attend lectures. She ultimately wants to know if attending lectures helps students’ quiz performance. Her data show that 22 of the 30 members of the first group (lecture attendees) passed the quiz, only 10 of the 28 members of the second group (non-attendees) passed the quiz.

Create a two-way table of quiz performance (passed / did not pass) by attendance status (attended / did not attend).
Describe, in percentages, the marginal distribution for quiz performance. Feel free to write these percentages into your table instead of describing them below.
Describe, in percentages, the conditional distribution of quiz performance within each independent variable. Feel free to write these percentages into your table instead of describing them below.
According to the data, does there appear to be an association between quiz performance and lecture attendance? Support your argument by referring to the conditional distribution of quiz performance across attendance status.

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