One of the two events must occur.If the chance of one is 2/3 of the other,then odds in favour of the other are
1:3
3:1
2:3
3:2
If X is a random variable with the following distribution then K=____________.
1/8
1/4
1/6
1/2
The value of C for which P(X=K)=CK2 Can serve as the probability distribution function of a random variable x that total value 0,1,2,3,4 is
1/100
1/15
1/10
1/30
A random variable X has following distribution .The variance of X is.
4
1
2
An ordinary cube has four blank faces.One face marked 2 and another marked 3.Then the probability of obtaining 12 in 5 throws is
None of these
If the standard deviation of a binomial distribution (q+p) 16 is 2,then its mean is
8
16
Two cards are drawn at random from a pack of 52 cards.The probability of these being queen is
1/26
1/221
Probability of getting heads in all the three trials,when a balanced coin is tossed thrice,will be
A team of 4 Musicians is to be chosen at random out of 3 boys,2 girls and 4 children.The chance that exactly two of them will be children is
10/21
4/9
3/43
