Question

Can anyone help me with this question on Frequency Trees? Thanks!

Answer 1

Answer: 0.5

a) boys: 14

girls : 16

b) the ways to randomly select a student is n(A) = 30C1 = 30

the ways to choose a girl is n(B) = 16C1 = 16

=> the probability to randomly select a student being a girl is

n(B)/n(A) = 16/30 ≈ 0.5

Explanation:

Answer 2

so if you put 14 in the boys bubble then do 30-14

Explanation: