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. 1) Is X a discrete or a continuous random variable? 

2) Determine the probability distribution function f(x) and the cumulative distribution function F (x) for the random variable X. 

3) Using F(x) find P(x< or = 1) 

4) Compute the mean, variance and standard deviation of the random variable X.  

Answer rating: 100% (QA)

Answer a The number X follows hypergeometric di... View the full answer