Suppose the tree diagram below represents all the students i

Suppose the tree diagram below represents all the students in a high school and that one of these students were chosen at random. If the student is known to be a girl, what is the probability that the student is left-handed?

Solution

there are 300 girl
Out of these 300 girls 50 are left and 250 are right handed girls

Now, P( student is left handed, given we know that it\' a girl)

= no. of girls who is left handed/ total girls

= 50/300

= .167