a) Consider the formula: . 4,2,1,0, 21 )( 2 x x XP Is ) (xP a probability mass function? If so, show the distribution of X in tabular form, and compute the expected value of X and its variance. b) The chairperson of the Finance Committee believes that 25% of the members of the committee will strongly support the tax proposal she wishes to advance. Suppose that this belief is correct and that five members are approached at random. What is the probability that a majority of the five will strongly support the proposal? (6 Marks)