Probability  MCQs

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(AB) =0.1 then PBAB' =______
(a) 38
(b) 23
(c) 18
(d) 14
Answer:

Option (c)

32.
If P(A)=0.1, P(B)=0.2 and P(AB) =0.25, then PBA' =_____
(a) 16
(b) 23
(c) 56
(d) 13
Answer:

Option (a)

33.
If P(A) = 0.1, P(B) = 0.2 and P(AB) = 0.25, then P(A'/B')
(a) 16
(b) 116
(c) 1516
(d) 316
Answer:

Option (c)

34.
The mean and variance of a binomial distribution is 43 and 2021 respectively then p=_____ where p is parameter
(a) 57
(b) 27
(c) 47
(d) 75
Answer:

Option (b)

35.
If the parameters of a binomial distribution are n=6 and p=0.40 , then mean is _____ and variance is_____
(a) 2.4,14.4
(b) 2.4,1.44
(c) 2.4,1.24
(d) 2.4,0.14
Answer:

Option (b)

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)= _____ .
(a) 0
(b) 12
(c) 14
(d) 18
Answer:

Option (b)

37.
If P (B') = 0.65, P (A  B) =0.85 and A and B are independent events, then P(A) = _____ .
(a) 113
(b) 1317
(c) 1013
(d) 47
Answer:

Option (c)

38.
For the probability distribution, if p(x) =c· 3x, x = 0, 1, 2, 3, then c = _____ .
(a) 139
(b) 140
(c) 119
(d) 118
Answer:

Option (b)

39.
For the probability distribution, if p(x) =c (14)x, x = 1, 2, 3, then c = _____ .
(a) 1621
(b) 6421
(c) 121
(d) 421
Answer:

Option (b)

40.
For the probability distribution, if p(x) =c 4x, x = 0, 1, 2, 3, 4, then c = _____ .
(a) 111
(b) 114
(c) 116
(d) 115
Answer:

Option (c)

Showing 31 to 40 out of 73 Questions