SOLUTION: It is reported that 15% of people who come into contact with a person infected with strep throat contract the disease. How might we use the random-number table to estimate the prob
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Question 1200783: It is reported that 15% of people who come into contact with a person infected with strep throat contract the disease. How might we use the random-number table to estimate the probability that at least one child in a three-child family will catch the disease, given that each child has come into contact with an infected person? Answer by ikleyn(52776) (Show Source):
"At least one" is the complement event to "no one".
It gives the ANSWER
P(at least one) = 1 - P(no one) = 1 - (1-0.15)^3 = 1 - 0.85^3 = 0.385875 (rounded).
