Test: Probability And Expected Value By Mathematical Expectation- 5

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(A) 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

The probability of throwing more than 4 in a single throw from an ordinary die is

The probability that a card drawn at random from the pack of playing cards may be either a queen or an ace is

The chance of getting 7 or 11 in a throw of 2 dice is

If the probability of a horse A winning a race is 1/6 and the probability of a horse B winning the same race is 1/4 , what is the probability that one of the horses will win

If the probability of a horse A winning a race is 1/6 and the probability of a horse B winning the same race is 1/4 , What is the probability that none of them will win

If P (A)= 7/8 then(P(A^C) is equal to

The value of P(S) were S is the sample space is

A man can kill a bird once in three shots.The probabilities that a bird is not killed is

If on an average 9 shops out of 10 return safely to a port. The probability of one ship returns safely is

If on an average 9 shops out of 10 return safely to a port. The probability of one ship does not reach safely is