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A group of 100 patients with a certain disease were treated by one of the two drugs. The results are given below. Not Cured

A group of 100 patients with a certain disease were treated by one of the two drugs. The results are given below. Not Cured Cured Drug 44 16 Drug II 18 22 If one of the patients is selected at random from the group, find the following: (a) The probability that the patient was treated by Drug I or the disease was cured. (b) Let C = "patient selected was cured" and D1 = "patient selected took Drug I". Are C and D1 independent? Justify.

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