Hi



I select a number from the 12 numbers 1 through 12. Each number is equally likely to be chosen.

Let A be the event: I chose an even number: 6 even numbers from 1 to 12

 Let B be the event: I chose a number less than or equal to 5. {5,4,3,2,1} 

a) P(A occurred or B occurred)= 6/12 + 5/12 - 2/12 = 9/12

b) P(A occurred and B occurred)= 2/12

c) P(A occurred given that B occurred) = 2/5 



 

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