Answer to Question #334689 in Statistics and Probability for Tes

Question

Suppose that a disease is inherited via a dominant mode of inheritance and that only one

of the two parents is affected with the disease. The implications of this mode of inheritance

are that the probability is 1 in 2 that any particular offspring will get the disease.

a) What is the probability that in a family with two children, both siblings are affected?

b) What is the probability that exactly one sibling is affected?

c) What is the probability that neither sibling is affected?

d) Suppose the older child is affected. What is the probability that the younger child is

affected?

e) If A, B are two events such that A = {older child is affected}, B = {younger child is

affected}, then. Are the events A, B independent?

Answer 1

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