Surgery has a success rate of 80% . suppose that the surgery is performed and 3 patients . A)what is the probability the surgery is successful in exactly 2 patients?  B)what is the probability of getting success in less than 2 patients?  C)on average, how many surgeries we expect to be successful?  D)what is the standard deviation of numbers of successful surgeries?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Surgery has a success rate of 80% . suppose that the surgery is performed and 3 patients .

A)what is the probability the surgery is successful in exactly 2 patients? 

B)what is the probability of getting success in less than 2 patients? 

C)on average, how many surgeries we expect to be successful? 

D)what is the standard deviation of numbers of successful surgeries? 

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