Question

Let’s say that the father in the second couple you’re working with also has a genetic predisposition to have children of a specific gender—but in this case, girls. Given that information, these are the probabilities the couple has before taking the test:

• The probability of the couple having a girl is 95%.
• The probability of the couple having a boy is 5%.
• The probability that the test is correct is 85%.
• The probability that the test is incorrect is 15%.



Question 1
Use this information to determine the values for the tree diagram.

Answer 1

P(A) = 0.95

P(B) = 0.05

P(C) = 0.85

P(D) = 0.15

P(E) = 0.15

P(F) = 0.85

Explanation: