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i need help please Based on the following fictional contingency table, what is the sample proportion of students who got a grade >80% in COMM

i need help please

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Based on the following fictional contingency table, what is the sample proportion of students who got a grade >80% in COMM 104, given they participate on the JDC West team? Round your answer to 4 decimal places. For example, if you get 0.51515, round to 0.5152. Participation in JDC West Team Yes No Grade >80% in Yes 50 50 COMM 104 No 5 270

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