Dr. J's Maths.com
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Tables, Venn diagrams and conditional probability.
Test Yourself 1 - Solutions.


 

     
 

5. We know that P(A∩B) = 2/5 and P(A∩B') = 3/7.

Draw a picture of the two overlapping sets:

We add the two sections related to A (3/7 + 2/5) to calculate P(A).

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  6.  
 

7. P(A|B) = p; P(B) = p2; P(A) = p1/3.

  
     
     
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