Carroll Chavez
04/18/2024 · Elementary School
Two litters of a particular rodent species have been born, one with two brown-haired and one gray-haired (litter 1), and the other with three brown-haired and two gray- haired (litter 2). We select a litter at random and then select an offspring at random from the selected litter. (a) What is the probability that the animal chosen is brown-haired? (b) Given that a brown-haired offspring was selected, what is the probability that the sampling was from litter 1 ?
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(a) The probability of selecting a brown-haired offspring is \( \frac{19}{30} \) or approximately 0.6333.
(b) Given that a brown-haired offspring was selected, the probability that the sampling was from litter 1 is \( \frac{10}{19} \) or approximately 0.5263.
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