..Suppose there are 40 students in a certain university and were asked wheather they are in favour of or against the wearing of school uniform.

Male-In favour (6)-Against(9)-Total(15)

Female-Infavour(17)-Against(18)-Total(25) Mr F says: The total is 35 ....?

Calculate the Marginal Probability for

a)p(male),b)P(female),c)P(in favour),P(against)

Attempt

a)15/40=3/8

b)25/40=5/8

c)23/40

d)27/40

Am I correct?

Thank you