Miss rose teaches three ballet classes. her students' data are shown in the
relative frequency table.
intermediate
advanced
total
beginner
0.15
boys
0.2
0.05
0.4
girls
0.1
0.35
0.15
0.6
total
0.25
0.55
0.2
1.0
which statement is true?
o
a. 40% of her students are girls.
o
b. 20% of her students are in the advanced class.
o
c. 20% of her students are in the intermediate class.
o
d. 15% of her students are boys.