could you show the steps thank you

Problem 5. A bag contains 7 red and 3 blue marbles. You draw three marbles from this bag Without replacement. Let X be the number of blue marbles you get. a (4.a) Is X a discrete or a continuous random variable? 0 (4b) Determine the probability distribution function f (3:) and the cumulative distribution function F(:I;) for the random variable X. o (4.c) Using F(a:) nd P(X g 1) 0 (4d) Compute the mean, variance and standard deviation of the random variable X