EXERCISES
1. suppose that a random variable X has a uniform distribution on the integers 10,…,20.
Find the probability that X is evan.
2. Suppose that a random variable X has discrete distribution with the following p.f.:
F(x)={█(cx for x=1,…,5.@0 oherwiset)┤
Determine the value of the constant c.
3. Suppose that two balanced dice are rolled, and let X denote the absolute value of the
difference between the two numbers that appear. Determine and sketch the p.f. of X.
4. Suppose that a fair coin is tossed 10 times independently. Determine the p.f. of the
number of heads that will be obtained