Women now make up 30% of the students in graduate engineering programs in the US. However, your mom's best friend, a woman engineer, thinks that the engineering programs are less likely to offer TA positions to their female graduate students. A survey of engineering graduate students in the US revealed that 80% of all TA positions are held by male engineering students.

A. contingency table showing the marginal probabilities given in the problem above.

So far I know that - marginals so far are .3, .7; p(M|TA) = .8 but this does not go into the contingency table. But I dont know what to do next