Question 552340: a surgical technique is performed on 7 patients you are told there is a 70 percent chance of success find the probability that surgery is a successful a )exactly 5 patients b) at least 5 patience and c) less then 3 patients
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! a surgical technique is performed on 7 patients you are told there is a 70 percent chance of success find the probability that surgery is a successful a )exactly 5 patients b) at least 5 patience and c) less then 3 patients
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Binomial Problem with n = 7 and P(success) = 0.7
a )exactly 5 patients
P(x = 5) = 7C5*0.7^5*0.3^2 = 0.3177
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b) at least 5 patience
P(5<= x <=7) = 1 - binomcdf(7,0.7,4) = 0.6471
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c) less then 3 patients
P(0<= x <=2) = binomcdf(7,0.7,2) = 0.0288
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Cheers,
Stan H.
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