SOLUTION: based on past data, 90% of students in Smartville have a sibling, 25% have a pet, and 10% have both. find the probability that a randomly selected student will have a sibling, give

Algebra ->  Probability-and-statistics -> SOLUTION: based on past data, 90% of students in Smartville have a sibling, 25% have a pet, and 10% have both. find the probability that a randomly selected student will have a sibling, give      Log On


   



Question 1158799: based on past data, 90% of students in Smartville have a sibling, 25% have a pet, and 10% have both. find the probability that a randomly selected student will have a sibling, given that they have a pet.
Answer by n2(82) About Me  (Show Source):
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based on past data, 90% of students in Smartville have a sibling, 25% have a pet, and 10% have both.
Find the probability that a randomly selected student will have a sibling, given that they have a pet.
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This problem is on conditional probability.


They want you find the probability that a randomly selected student has both a sibling and a pet,
given that the student has a pet.


So, the conditional probability  is  P = 0.1%2F0.9 = 0.1111...   ANSWER

Solved.