Under the assumptions made in Problems 3.55 and 3.56, find the unconditional probability that the offspring will have asthma?

Suppose, alternatively, that if the father is a current smoker, then the probability that the mother is a current smoker is .6; whereas if the father is not a current smoker, then the probability that the mother is a current smoker is .2. Also assume that statements 1, 2, 3, and 4 above hold.

Refer to Problem 3.55 and 3.56,

3.55 If the probability that the father is a current smoker is .5, what is the probability that the father is a current smoker and that the mother is not a current smoker?

3.56 Are the current smoking habits of the father and the mother independent? Why or why not?