SOLUTION: A vaccine is 90 percent effective.What is the probability that it is effective for one and only one individual out of 20 individuals?

Algebra ->  Probability-and-statistics -> SOLUTION: A vaccine is 90 percent effective.What is the probability that it is effective for one and only one individual out of 20 individuals?      Log On


   



Question 354972: A vaccine is 90 percent effective.What is the probability that it is effective for one and only one individual out of 20 individuals?
Answer by robertb(5830) About Me  (Show Source):