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Business, 10.07.2019 13:00 ananyaamazing
Patients are given a drug treatment and then evaluated. symptoms either improve, degrade or remain the same with probabilities 0.4, 0.1, 0.5, respectively. assume that four independent patients are treated and let x and y denote the number of patients who improve or degrade. are x and y independent? calculate the covariance and the correlation between x and y.
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