53- The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have contracted this disease, what is the mean A. 0.1859 B. 6 C. 3.6 D. 1 54-The probability that a patient recovers from a rare blood disease is 0.4. If 15 people are known to have contracted this disease, what is the variance A. 0.1859 B. 6 C. 3.6 D. 1

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