Instruction 4-3
A survey is taken among customers of fast-food restaurants to determine preference for hamburgers or chicken.Of 200 respondents selected,75 were children and 125 were adults.120 preferred hamburgers and 80 preferred chicken.55 of the children preferred hamburgers.
-Referring to Instruction 4-3,assume we know that a person has ordered a hamburger.The probability that this individual is a child is ________.

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The Answer of Instruction 4-3
A survey is taken among customers of fast-food restaurants to determine preference for hamburgers or chicken.Of 200 respondents selected,75 were children and 125 were adults.120 preferred hamburgers and 80 preferred chicken.55 of the children preferred hamburgers.
-Referring to Instruction 4-3,assume we know that a person has ordered a hamburger.The probability that this individual is a child is ________.

Instruction 4-3 a Survey Is Taken Among Customers of Fast-Food Restaurants to Restaurants