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**desire150** 10. The following data from a sample of 100 families show the record of college attendance by fathers and their oldest sons: in 22 families, both father and son attended college; in 31 families, neither father nor son attended college; in 12 families, the father attended college while the son did not; and, in 35 families, the son attended college while the father did not.

a. What is the probability a son attended college given that his father attended college? **0.22** **(3 pts)**

b. What is the probability a son attended college given that his father did not attend college? **0.35** **(3 pts)**

My answers are wrong and I followed the joint probability formula..