SCENARIO 4-13
A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or
chicken. Of 200 respondents selected, 75 were children and 125 were adults. 120 preferred hamburger
and 80 preferred chicken. 55 of the children preferred hamburger.
-Referring to Scenario 4-13, assume we know that a person prefers hamburger. The probability
that this individual is a child is __________.

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The Answer of SCENARIO 4-13
A survey is taken among customers of a fast-food restaurant to determine preference for hamburger or
chicken. Of 200 respondents selected, 75 were children and 125 were adults. 120 preferred hamburger
and 80 preferred chicken. 55 of the children preferred hamburger.
-Referring to Scenario 4-13, assume we know that a person prefers hamburger. The probability
that this individual is a child is __________.

SCENARIO 4-13 A Survey Is Taken Among Customers of a Fast-Food Restaurant