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Biostatistics Question 1 At a lab, 380 people got Covid positive while 150 people got Covid negative results. Among those who got Covid positive, 20%

Biostatistics

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Question 1 At a lab, 380 people got Covid positive while 150 people got Covid negative results. Among those who got Covid positive, 20% were already vaccinated. Among those who got Covid negative, 90% were already vaccinated. Can we conclude that vaccination has some effect on test results? Make null and alternative hypothesis. Write complete conclusion. ( 1 0 marks) Hint: Make the contingency table and perform Chi-square. Also, write the decision in terms of the question asked

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