2. Calculate the probability that the couple conceived a girl and the test predicts a boy. 3. Calculate the probability that the couple conceived a boy and the test predicts a girl.

4. calculate the probability that the couple conceived a boy and the test predicts a boy.

5. calculate the probability that the couple conceived a girl before the test was taken. (hint: add the probabilities you found for question 1 and 2, and divide by the sum of all probabilities.)