Respuesta :
P(liberal | State A) means that probability of liberal candidates to be voted for within state A. This probability could be calculated by the pattern: number of successful events/total events. The successful events referred here is the number of liberal votes in state A. That is equal to 22. The total events is the total number of votes in state A which is 40.
The probability is 22/40 = 0.55
Answer: [tex]\dfrac{3}{5}[/tex]
Step-by-step explanation:
The given table :
State A State B State C Total
Liberal 20 21 12 53
Conservative 20 14 13 47
Total 40 35 25 100
Since , the conditional probability of event A given B is given by :-
[tex]P(A|B)=\dfrac{P(A\cap B)}{P(B)}[/tex]
Now, [tex]\text{P(State B)}=\dfrac{35}{100}[/tex]
[tex]\text{P(liberal}\cap\text{State B)}=\dfrac{21}{100}[/tex]
Now, [tex]\text{P(liberal}|\text{State B)}=\dfrac{\text{P(liberal}\cap\text{State B)}}{\text{P(State B)}}[/tex]
[tex]=\dfrac{\dfrac{21}{100}}{\dfrac{35}{100}}\\\\\\=\dfrac{21}{35}=\dfrac{3}{5}[/tex]