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The count that you found in the previous question is the number of students with high extra-curricular participation and good grades that you would expect to see assuming that:
the conditions that allow us to safely use the chi-squared procedure are met.
extra-curricular participation and grade performance are related.
extra-curricular participation and grade performance are independent.
the null hypothesis of the chi-squared test for independence in this case is true.
both (C) and (D) are correct.
ANSWER:
