Probability concept, What is the probability of finding 1

Probability concept

Reference no: EM1312682

In a study, we found that a group where children in 5 of 25 (20%) of the households, where both parents are chronic bronchi tics develop chronic bronchitis. The national incidence rate of chronic bronchitis in the 1^st year of life is 10% for all children. Due to the findings, people were concern that the group is exposed to some risk indicators that may affect their results.

a) What is the probability of finding 1 or more children with chronic bronchitis in a population where the incidence rate of chronic bronchitis is 10% (like the one above?)

b) What is the probability of finding 2 or more children with chronic bronchitis in a population where the incidence rate of chronic bronchitis is 10% (like the one above?)

c) Let's assume that the answer for part A of the question is 12% (it is not necessary true, and in fact-it is not the correct answer to part A. Again, you do not need to calculate the answer to part A).

Using the information above, can you simplify your answer to part B (That is, reduce the number of calculations that you will need to do?) Explain.

Reference no: EM1312682

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