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Mathematics, 22.06.2019 21:00 j1theking18

Someone plz. what does p(b|a) = 0.25 mean in terms of the venn diagram. a.) of people who have a sister, 1 of them also have a brotherb.) of the 8 people surveyed, 2 of these have a brother. c.) of the 4 people who don't have a sister, 1 of them has a brother. d.) of the 4 people who don't have a sister, 1 of them has a brother.


Someone plz. what does p(b|a) = 0.25 mean in terms of the venn diagram.a.) of people who have a sis

Answers

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Answer from: evanwall91

a and c i think

the blue circle is all the people who had brothers one name was in the blue circle so one person had a brother but the in between part of the too circles are who had both a brother and a sister so the is one name in the between purple  so you count that one to for brother and for sisters

there were  2 people that had brother

 and four people that had sisters

and one that had both

ansver
Answer from: nathang444

A. of the 4 people who have a sister, 1 of them also has a brother.

Step-by-step explanation:

Hope it helped you!

ansver
Answer from: honestty21

Of the 4 people who have a sister, 1 of them also has a brother.

Step-by-step explanation:

Just took the quiz on APEX :)

ansver
Answer from: mallyosburn

The expression P(B/A) = 0.25 mean in terms of the Venn Diagram :

     Option: D

D. of the 4 people who has a sister , 1 of them has a brother.          

Step-by-step explanation:

event A = the person has a sister

and event B = the person has a brother

This means that: A∩B denote the event that the person has a sister and brother.

Also we are given that: P(B|A)=0.25

We know that:

P(B|A)=\dfrac{P(A\bigcap B)}{P)(A)}

Also,

0.25=\dfrac{1}{4}=\dfrac{P(A\bigcap B)}{P(A)}

This means that out of the 4 person who has a sister 1 has a brother.

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