BUS 250 Dr. Smith Exam 1 Fall 2022 10) A set of 10 cards consist of 5 red cards and 5 black cards. The cards are shuffled thoroughly, and I chose one at random, observe its color, and replace it in the set. The cards are thoroughly reshuffled, and I again choose a card at random, observe its color, and replace it in the set. This is done a total of four times. Let X be the number of red cards observed in these four trials. What is the mean and standard deviation of X