A professor is interested in knowing if the number of absences a student has in the semester is a good indication of how well a student does on the final exam.At the end of the year, the professor compares absence rates and exam grades for eight students. The data she found are as follows.

Student Days Absent Final Exam Grade
A 8 77
B 3 84
C 9 71
D 10 73
E 9 70
F 5 80
G 6 79
H 2 88
What is the null hypothesis?
What is the research hypothesis?
Calculate the Pearson's correlation coefficient.
Calculate t.
Is your correlation statistically significant and, if so, at what level?
What are your conclusions about the null hypothesis?


Answer:

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