pink.1d
  • pink.1d
Choose a row and column and compare P(A | B) with P(B | A). Explain what each probability means in the context of the situation and data you collected.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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pink.1d
  • pink.1d
This is my graph
pink.1d
  • pink.1d
table***
pink.1d
  • pink.1d
Use social media regularly Don't use social media Younger than 18 16 4 Older than 18 11 9

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More answers

pink.1d
  • pink.1d
@perl
pink.1d
  • pink.1d
also: Compare P(A∩B) with P(A∪B), and explain what each probability means in the context of the situation and data you collected. SAME TABLE posted above
pink.1d
  • pink.1d
@dan815 @iambatman @triciaal
perl
  • perl
lets start with the first question
pink.1d
  • pink.1d
okay:)
perl
  • perl
first find the totals http://prntscr.com/7cj8yl
perl
  • perl
Let A = Use social media regularly Let B = Younger than 18 P( A | B) = 16/20 P(B|A) = 16/27
pink.1d
  • pink.1d
i understand up to now
pink.1d
  • pink.1d
i dont get what they mean when it says ' Explain what each probability means in the context of the situation and data you collected.' i dont know how to answer that. i know how to find the answer but i m not sure how to answer that
perl
  • perl
P(A | B) means probability use social media regularly given that we only look at people who are younger than 18 http://prntscr.com/7cja04 Or another way to say it, of people who are younger than 18 what is probability that randomly selecting one uses social media
perl
  • perl
so we only look at that top row
pink.1d
  • pink.1d
so the top row and 1s2 colum?
pink.1d
  • pink.1d
1st*
pink.1d
  • pink.1d
younger than 18 and use social media
pink.1d
  • pink.1d
@perl @perl @perl @perl dont leave
pink.1d
  • pink.1d
YAY ur back! :)
perl
  • perl
right, top row and first colmun is P(A|B)
perl
  • perl
P(A|B) corresponds to top row and first colmun also we can express it as P(A|B) =P(A∩B) / P(B)
pink.1d
  • pink.1d
what does p(b line a) mean. it means
perl
  • perl
P(B|A) says to look in only first column, first row
pink.1d
  • pink.1d
so what exactly does that mean?
pink.1d
  • pink.1d
im confused
pink.1d
  • pink.1d
does it mean it all out of total
perl
  • perl
If we define http://prntscr.com/7cjcnn P(B|A) says to look in only first column A P(A|B) says to look only in first row B
pink.1d
  • pink.1d
can you look over the answer I wrote?
perl
  • perl
what did you write
pink.1d
  • pink.1d
P(B | A) means probability of those under 18 who use social media regularly out of the total people that use social media regularly
pink.1d
  • pink.1d
P(A | B) : This probability means means probability of those under 18 who use social media regularly out of all the people under 18
perl
  • perl
do you agre that I defined A = "those who use social media regularly"
pink.1d
  • pink.1d
am i right?
perl
  • perl
agree*
pink.1d
  • pink.1d
or wrong
perl
  • perl
its kind of hard to say, its a bit confusing what you wrote for the second one
pink.1d
  • pink.1d
P(A | B) : This means probability of those under 18 who use social media regularly out of all the people under 18
pink.1d
  • pink.1d
i edited that
pink.1d
  • pink.1d
is the first one right?
pink.1d
  • pink.1d
@perl
perl
  • perl
P(A|B): probability that a person who is younger than 18 uses social media regularly.
perl
  • perl
P(B|A): Probability that a person who uses social media regularly is younger than 18.
perl
  • perl
http://prntscr.com/7cjfig
pink.1d
  • pink.1d
@perl can you help me with the second one please?
pink.1d
  • pink.1d
NEVERMIND
pink.1d
  • pink.1d
THANKS FOR ALL THE HELP

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