Answer:
Step-by-step explanation:
we know that
In the diagram
Equate
X= tennis balls Noah has
x<8
Pupils that chose Band: 60%
Pupils that chose Chorus: 40%
Boys in band: 70%
Boys in chorus: 30%
Probability of choosing boy = Probability of boy in band + Probability of boy in chorus
P = 0.6 x 0.7 + 0.4 x 0.3
P = 0.54
The answer is D.
Hi there I’m here for points I’m sorry I couldn’t help:/