SOLUTION: if a new drug is found to effective 70% the time it is used, is the probablity that in a random sample of 3 patients it will beeffective on all of them?

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Question 832710: if a new drug is found to effective 70% the time it is used, is the probablity that in a random sample of 3 patients it will beeffective on all of them?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
P(eff)=7%2F10
p(3 eff)=%287%2F10%29%2A%287%2F10%29%2A%287%2F10%29=343%2F1000