Examine which one of the following represent the probability distribution of a random variable x

Probability Distribution of Random variable

State which of the following are not the probability distributions of a random variable. Give reasons for your answer.

The probability fuction of a random variable is always

Answer the following questions: What is probability mass function of a random variable?

Let x denote the sum of digits in the random experiement of throwing two balacned dice find the probability distribution of the random variable x

Which one of the following diagrams represent the placentation in Dianthus?

Which one of the following represents a palindromic sequence in DNA ?

In each case determine wheather the given values can be looked upon as the values of a probability distribution of a random variable which can take up only the values 1,2,3 and 4 and explain your answer : f(x)=(x+1)/(4) .

A random variable X has the following probability distribution: Find the expectation of the random variable X.