A new drug is found to be 70% effective in curing a certain kind of skin illness. From a pool of patients who had received the drug after being diagnosed with the illness, 12 of them are randomly selected. Assume a considerable amount of time has passed between a patient being administered the drug and the selection then occuring (to ensure the drug's effectiveness or lackthereof in treating a patient). Answer the following:   a) What is the likelihood that exactly 5 of the twelve patients chosen have been cured of the illness? b) a) What is the likelihood that at most 5 of the twelve patients chosen have been cured of

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