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The king's sibling. The king has only one sibling. What is
Chapter , Problem 32(choose chapter or problem)
The king has only one sibling. What is the probability that the sibling is male? Assume that every birth results in a boy with probability 1/2, independent of other births. Be careful to state any additional assumptions you have to make in order to arrive at an answer.
Questions & Answers
QUESTION:
The king has only one sibling. What is the probability that the sibling is male? Assume that every birth results in a boy with probability 1/2, independent of other births. Be careful to state any additional assumptions you have to make in order to arrive at an answer.
ANSWER:Step 1 of 3
Given that,
The king has only one sibling.
It is required to compute the probability that the sibling is male.
It is assumed that every birth results in a boy with probability 1/2, independent of other births.
The king has only one sibling. This implies that the family has only two children.
This means:
a. The family has a boy, the king.
b. The king has a sibling (either male or female).