A bag contains 1 gold marbles, 6 silver marbles, and 21 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $3. If it is black, you lose $1. What is your expected value if you play this game?

Your friend offers to place a bet with you. He will pay you $2 if your favorite sports team wins the game on Tuesday night.  But you will pay him $3 if his team wins.  Your team has an 55% chance of winning, whereas his only has a 45% chance.  This bet is in your favor.  True or False?

Karey has three movie choices. She can choose between a comedy, a drama, or a thriller. She will want a snack as well. Her choices are popcorn, nachos & cheese, potato chips, or peanuts. What is the probability that she will watch a thriller and eat popcorn?

For Jermaine’s birthday, he can choose his gift from a stack of 4 sealed cards.  Each card has one of four possible amounts: $10, $25, $50, and $100, and each amount has an equal probability.  He is not allowed to open the card.  Complete the table and answer the questions.