In this exercise, determine whether a probabilitydistribution is given. In the case where a probability distribution is not described, identify the requirements that are not satisfied. In the case where a probability distribution is described, find its means and standard deviation.
For a group of four men, the probability distribution for the number x who live through the next year is as given in the accompanying table.
(a) Since the sum total of the P(x) values = 1, the given distribution is a probability distribution.
A complete, neat and step-by-step solution is provided to determine whether a probability distribution is given. Also finds the mean and standard deviation.