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 right-handed?
Boys
200
50
Left-
handed
150
Right-
handed
50
Left-
handed
Girls
300
250
Right-
handed
○ A.
О в.
314
-16
○ D. 1