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A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or...

A survey is taken among customers of a fast-food restaurant to determine preference for
hamburger or chicken. Of 300 respondents selected, 80 were children and 220 were adults. 200
preferred hamburger and 100 preferred chicken. 55 of the children preferred hamburger.
Assume we know the person is a child. What is the probability that this individual prefers
hamburger?

Math   Statistics-And-Probability   
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