1. Independent vs. Dependent Events

Identify if an event is independent or dependent.

Which of the following describes dependent events?

• a.) Renata randomly chooses a chocolate chip cookie from a cookie jar. She eats the cookie and chooses again. This time she gets a sugar cookie.
• b.)Rudolph randomly picks names out of a hat. He chooses "Mark" first. He puts Mark's name back in the hat and chooses again. This time he chooses "Indira."
• c.) Rufus spins a spinner and it randomly lands on the number 7. Rufus spins the spinner again, and it lands on the number 7 again.
• d.)Rocky tosses a six-sided die that lands on the number 1. Next, he picks a card from a standard deck of playing cards and gets the number 4.

2. There are 13 cards with diamonds in a standard deck of 52 cards. What is the probability of drawing a diamond from a standard deck of cards AND getting tails upon flipping a coin?

• a.)1/8
• b.) 1/2
• c.) 3/4
• d.) 1/4

3. A teacher is sorting students into teams by placing everyone's name into a bowl. There are 15 girls and 9 boys in the class. What is the probability that the first two names drawn are boys?

• a.)3/23
• b.) 1/8
• c.)11/31
• d.)27/184