MCQs of Probability

Showing 31 to 40 out of 73 Questions

31.

If two event A and B such that P(A')=0.5, P(B)=0.3 and

P (A \cap B)

=0.1 then

P (B A \cup B')

=______

32.

If P(A)=0.1, P(B)=0.2 and

P (A \cup B)

=0.25, then

P (B A')

=_____

33.

If P(A) = 0.1, P(B) = 0.2 and

P (A \cup B)

= 0.25, then P(A'/B')

34.

The mean and variance of a binomial distribution is

\frac{4}{3}

and

\frac{20}{21}

respectively then p=_____ where p is parameter

35.

If the parameters of a binomial distribution are n=6 and p=0.40 , then mean is _____ and variance is_____

36.

A fair coin is tossed three times. The events A, B, E, F, M, N are described as given : A : Head on third toss B : Head on first toss

∴ P (A / B) =

_____ .

37.

If P (B') = 0.65,

P (A \cup B) = 0.85

and A and B are independent events, then P(A) = _____ .

38.

For the probability distribution, if

p (x) = c \cdot 3^{x}

, x = 0, 1, 2, 3, then c = _____ .

39.

For the probability distribution, if

p (x) = c (\frac{1}{4})^{x}

, x = 1, 2, 3, then c = _____ .

40.

For the probability distribution, if

p (x) = c (\begin{matrix} 4 \\ x \end{matrix})

, x = 0, 1, 2, 3, 4, then c = _____ .

Showing 31 to 40 out of 73 Questions