(14) In a faraway land, there are 80% white people. There are 25% of people have...

(14) In a faraway land, there are 80% white people. There are 25% of people have a particular disease. And if you randomly select a person, that person has 20% chance of being white and have the disease.

What proportion of students are non-white and who is healthy?
Kelly’s race is white, what is the chance that she has this disease?
Are the events of being white and having the disease independent events?
If you randomly select 10 people, what is the chance that 2 have the disease?

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orchestra answered 1 year ago

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