Question

RANDOM VARIABLES, PROBABILITY DISTRIBUTIONS AND EXPECTED VALUE A random variable X has the following probability distribution: What is P(X>4) ? Write your answer as a decimal.

Answer 1

The answer would be a commulative probability. It would be the sum of the probability of the results greater than 4. From the table, the P(X) of X=5 and X=6 are both 0.1. We just need to add these values:

P(X>4) = P(5) + P(6) = 0.1 + 0.1 = 0.2

Answer: P(X>4) = 0.2