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Manipal MET2016MathematicsProbability

Let A and B be two events such that P( A B )= 1 6 , P(A B)= 1 4 and P( A )= 1 4 , where A stands for complement of event A . Then, the events A and B are

Options

  1. Amutually exclusive and independent
  2. Bindependent but not equally likely
  3. Cequally likely but not independent
  4. Dequally likely and mutually exclusive

Correct answer

B. independent but not equally likely

Step-by-step solution

Given, P( A B )= 1 6 array lr & 1-P(A B)= 1 6 & 1-P(A)-P(B)+P(A B)= 1 6 array array lr & P( A )-P(B)+P(A B)= 1 6 & 1 4 -P(B)+ 1 4 = 1 6 array aligned & & and P(B)= 1 3 & an P( A )=1- 1 4 = 3 4 aligned Since, P(A B)=P(A) P(B) , so the events A and B are independent events but not equally likely.

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