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mnriegner
21.07.2019 •
Social Studies
Plesase m what are three examples of how geography affects economic developement in a specific
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Ответ:
Ответ:
Complete Question
Calculating conditional probability
The usher at a wedding asked each of the 80 guests whether they were a friend of the bride or of the groom.
Here are the results:
Bride :29
Groom :30
BOTH : 20
Given that a randomly selected guest is a friend of the groom, find the probability they are a friend of the bride.
P (bride | groom)
The probability is![P(B|G) = \frac{2}{3}](/tpl/images/0682/9506/c181b.png)
Step-by-step explanation:
The sample size is![n = 80](/tpl/images/0682/9506/14e4e.png)
The friend of the groom are![G = 30](/tpl/images/0682/9506/9082a.png)
The friend of the groom are![B = 29](/tpl/images/0682/9506/4b0eb.png)
The friend of both bride and groom are![Z = 20](/tpl/images/0682/9506/8eab3.png)
The probability that a guest is a friend of the bride is mathematically represented as
The probability that a guest is a friend of the groom is mathematically represented as
The probability that a guest is both a friend of the bride and a friend of the groom is mathematically represented as
Now
Substituting values