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PROBABILITY DENSTIY FUNCTION: DISCRETE RANDOM VARIABLES 1. Emma is playing a game with a biased five sided spinner marked with the numbers 1,2,3,4, and 5. When she spins the spinner, her score, is the number on which the spinner lands. The probability distribution of X is shown in the table: X 1 2 LU 4 5 P(X=x) 0.15 0.24 a 0.25 0.19 a) Find the value of a. b) Find the probability that the score is at least 4 c) Find the probability that the score is less than 5 d) Find P(2