Test: Probability And Expected Value By Mathematical Expectation- 5 - CA Foundation MCQ

If two events are independent then

When expected value is negative the result is

The expected value of X, the sum of the scores, when two dice are rolled is

Let A and B be the events with P(A)= 1/_3, P(B) = ¼ and P(AB)= 1/₁₂ then P(A/_B) is equal to

Let A and B be the events with P(A)= 2/₃, P(B)= ¼ and P(AB)= 1/₁₂ then P(B/_A) is equal to

The odds in favour of one student passing a test are 3:7.The odds against another student passing at are 3:5.The probability that both pass is

The odds in favour of one student passing a test are 3:7.The odds against another student passing at are 3:5. The probability that both fail is

In formula P(B/_A), P(_A) is

Two events A and B are mutually exclusive means they are

A bag contains 10 white and 10 black balls A ball is drawn from it. The probability that it will be white is

Two dice are thrown at a time. The probability that the nos shown are equal is

Two dice are thrown at a time. The probability that ‘the difference of nos shown is 1’ is

Two dice are thrown together. The probability that ‘the event the difference of nos shown is 2’ is

The probability space in tossing two coins is

The probability of drawing a white ball from a bag containing 3 white and 8 balls is

Two dice are thrown together. The probability of the event that the sum of nos. shown is greater than 5 is

A traffic census show that out of 1000 vehicles passing a junction point on a highway 600 turned to the right. The probability of an automobile turning the right is

Three coins are tossed together. The probability of getting three tails is

Three coins are tossed together.The probability of getting exactly two heads is

Three coins are tossed together. The probability of getting at least two heads is

 if 4 coins are tossed. The probability that there are 2 heads is

If 4 coins are tossed. The chance that there should be two tails is

If A is an event and A^C its complementary event then

If P(A)= 3/8, P(B)= 1/3 and P(AB)= ¼ then P(A^C) is equal to

If P(A)= 3/8, P(B)= 1/3 then P(AUB) is equal to

If P(A)= 3/8, P(B)= 1/3 and P(AB)= ¼ then P(A + B)is

If P(A)= 1/5, P(B)= 1/2 and A and B are mutually exclusive then P(AB) is