SOLUTION: X Y Tot A 24 31 55 B 13 66 79 Tot 37 97 134 Is P(X or A) = 37/137 + 55/134 - 24/134 ? and Is P(X|A) = 24/55? = (

Algebra ->  Probability-and-statistics -> SOLUTION: X Y Tot A 24 31 55 B 13 66 79 Tot 37 97 134 Is P(X or A) = 37/137 + 55/134 - 24/134 ? and Is P(X|A) = 24/55? = (      Log On


   

Question 928550: X Y Tot
A 24 31 55
B 13 66 79
Tot 37 97 134
Is P(X or A) = 37/137 + 55/134 - 24/134 ?
and
Is P(X|A) = 24/55? = (XnA)/P(A)?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

       X      Y      Tot



A    24     31      55



B    13     66      79



Tot  37     97     134

.......

P(A or B) = P(A) + P(B) - P(A and B)

 P(X or A) = 37/134 + 55/134 - 24/134 = 68/134 = 34/67

.......

P(A|B) = P(A and B)/P(B)

P(X|A) = %2824%2F134%29%2F%2855%2F134%29 = 24/55

Good  Work.