There are three $20 bills, six $10 bills, seven $5 bills, and four$1 bills in your wallet. You select one bill at random. What is the expected value for this experiment?
$ _______
You roll a pair of six-sided number cubes, numbered 1 through 6. What is the probability of rolling two odd numbers? (Enter your probability as a fraction.)
=__________
+37170 Twenty bills
3/20 ($20) + 6/20 (10) + 7/20(5) + 4/20(1) = 7.95 expected value
+37170 3/6 are odd for each die
3/6 x 3/6 = 9/36 = 1/4 chance of both being odd
