Question

:D

Answer 1

you know about the conditional probability right?

Answer 2

anyway in option A ,
P(Male | type B) that means probability of being male given that the type is B.
so the probability is
P(Male | type B ) = number of males in B / total number in B = 48/(48+22) = 48/70
now
P(Male or type B ) that means probability of being male or being in type B,
so here
P(Male or type B) = number of males /total number + number of type B / total number - number of male in type B /total number
now compare

Answer 3

you should know about conditional probability and P(A or B), P( A and B) kind of formulae before attempting these kind of question, please refer to them and practice atleast two of each kind and then attempt these kind of problems :) :D

Answer 4

yes its B, because as i said the P(Male or type B ) will come as 0.625, so
B is the correct.

Answer 5

wait
its not B

Answer 6

P(Male | type B ) = 48.0/70 = 0.6857
P(Male or type B) = 125/200 = 0.625

Answer 7

what is B true???

Answer 8

i told you to calculate those values, why are you in such hurry about result, learn the concept friend, rest will automatically come :)