7.13 Simulate the chance experiment described in Exercise 7.12 using five slips of paper, with two marked defective and three marked nondefective. Place the slips in a box, mix them well, and draw out two. Record the number of defective boards. Replace the slips and repeat until you have 50 observations on the variable x. Construct a relative frequency distribution for the 50 observations, and compare this with the probability distribution obtained in Exercise 7.12.