There are 200 students in the 7th grade class at Brookside Middle School. Of these students, 12% play volleyball and 15% play ba
seball. four students play on both teams. What is the probability that a student plays either volleyball or baseball?
a.27%
b.25%
c.22%
d.30%
2 answers:
Answer:
Option B
Step-by-step explanation:
Given that there are 200 students in 7th grade
Volley ball players = 12% = 24
Baseball players = 15% = 30
Both players = 4
We have to find out the probability that a student plays either volley ball or baseball
No of students who play either base ball or volley ball =
24+30-4= 50
Probability that student plays either volleyball or baseball
=
In percent this equals 25%
Option b
P(volleyball and baseball) = 4/200 x 100 = 2%
P(either volleyball or baseball) = P(volleyball ∪ baseball) = P(volleyball) + P(baseball) - P(volleyball and baseball) = 12% + 15% - 2% = 25%.
25% play either volleyball or baseball.
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