An unbaised coin is thrown 5 times. Let X be a random variable and k be the value of assigned to X for k=3,4,5 times Head occurs consecutively and otherwise the value of X is assigned -1. What is value of expection.
The distribution of a random variable X is goven below The value of k is
The probability distribution of a discrete random variable X is given below The value of k is
An unbiased coin is tossed 5 times. Suppose that a variable X is assigned the value k when k consecutive heads are obtained for k=3,4,5 otherwise X takes the value -1 .Then the expected value of X ,is :
If X is a random variable with distribution given below The value of k and its variance are
The probability of a random variable X is given below Determine the value of k
A fair coin is tossed 3 times. Let X be the number of heads obtained. Find E(X) and V(X).
2 dice are thrown. Suppose a random variable X is assigned a value 2k, if the sum on the dice is equal to k, then the expected value of X is
A random variable X takes the values 0,1 and 2 .If P(X=1)=P(X=2) and P(X=0)=0.4 ,then the mean value of the random variable X is
An unbiased die is tossed 3 times, suppose that a variable x is assigned the value k, when k consecutive sixes are obtained for else x takes the value –1 . Then expected value of x is:
If x and y are random variables having expected values as 4.5 and 2.5 respectively, then the expected value of (x-y) is
