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leannehounschell
03.07.2019 •
Mathematics
The probability that a high school student in in the marching band is 0.47. the probability that a student plays a varsity sport is 0.32. the probability that a student is in the marching band and plays a varsity sport is 0.24. what is the probability that a student plays a varsity sport if we know she is in the marching band? question 9 options: .51 .75 .32 .24
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Ответ:
The probability that a high school student in in the marching band is 0.47
so,![P(M)=0.47](/tpl/images/0044/5083/22909.png)
The probability that a student plays a varsity sport is 0.32
so,![P(V)=0.32](/tpl/images/0044/5083/3860a.png)
the probability that a student is in the marching band and plays a varsity sport is 0.24
so, we get
P(M∩V)=0.24
a student plays a varsity sport if we know she is in the marching band
so,
P(V|M)=(P(V∩M))/(P(M))
now, we can plug values
and we get
So,
the probability that a student plays a varsity sport if we know she is in the marching band is 0.51063......Answer
Ответ:
12,x2 917=/17138,1-819