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Pulsified333
 one year ago
nvolving sets A and B. Suppose for this problem that Pr[AB]=1/2, Pr[A]=1/5, and Pr[B′]=7/10.
(1) What is Pr[BA]?
(2) What is Pr[BA′]?
Pulsified333
 one year ago
nvolving sets A and B. Suppose for this problem that Pr[AB]=1/2, Pr[A]=1/5, and Pr[B′]=7/10. (1) What is Pr[BA]? (2) What is Pr[BA′]?

This Question is Closed

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1you want \[P(A\cap B)\]right, so you can compute the ratio you need for both

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442891498761:dw

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1\[\frac{P(A\cap B)}{P(B)}=P(AB)\] you have two out of the three numbers you need to find \(P(A\cap B)\)

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0we have A and P[AB]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1you got \(P(B)\) and \(P(AB)\) so you can solve for \(P(A\cap B)\)

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0We have the complement of B

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0but B = 3/10 Right?

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1yeah \[P(B)=\frac{3}{10}\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1'cause you be sippin syrup that's why!

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0so its (3/10)*(1/2)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[\frac{1}{2}\times \frac{3}{10}=\frac{3}{20}\]

misty1212
 one year ago
Best ResponseYou've already chosen the best response.1oh the multiplication is wrong, yeah

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0@satellite73 how would you do (2)

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0well i know A' is 4/5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[P(BA')=\frac{P(A'\cap B)}{P(A')}\]

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0but how do you Find P(A′∩B)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dw:1442892611104:dw

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0B= 3/10 and P(A∩B)=3/20

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0@satellite73 is the answer (3/10)/(4/5)= 3/8

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dang i made a typo sorry, i meant to write \[P(B)P(A\cap B)\]

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0which equals 6/20

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that is your numerator \[P(A'\cap B)\]

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0okay which is (3/10)/(4/5)?

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0but the answer 3/8 is wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it is hard for me to keep scrolling up \[P(A')=\frac{4}{5}\] right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what is \(P(A\cap B)\)?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and what is \(P(B)\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so \[\frac{3}{10}\frac{3}{20}=\frac{3}{20}\]

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0so its (3/20)/(4/5)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0answer would be \[\frac{\frac{3}{20}}{\frac{4}{5}}\]

Pulsified333
 one year ago
Best ResponseYou've already chosen the best response.0I wish i could give two medals but i Cant

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks i got plenty bought my bike with my first 1000

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.0hmm that was the answer for one?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0lol no one is ancient history

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0that was \[P(BA')\]

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.0hehehe ah ok

xapproachesinfinity
 one year ago
Best ResponseYou've already chosen the best response.0Good computation :)
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