Simple Theoretical Probability

Theoretical Probability

• I can determine the probability of simple events.

• I can use lists or tree diagrams to determine the probability of compound events.

Multiple Select

I can determine the probability of simple events.

There are 3 dogs and 7 cats. If randomly chosen, what is the probability someone would choose a dog?

• $$\frac{3}{7}$$  

• $$\frac{3}{10}$$  

• $$\frac{7}{10}$$  

• $$0.3$$  

Multiple Choice

I can determine the probability of simple events.

There are 3 red marbles, 4 blue marbles, and 6 yellow marbles in a bag. If randomly chosen, what is the probability someone would choose a blue marble out of the bag?

• $$\frac{3}{13}$$  

• $$\frac{6}{13}$$  

• $$\frac{4}{13}$$  

• $$0.6$$  

Multiple Select

I can determine the probability of simple events.

Sophia is selling girl scout cookies. She sold 10 boxes of thin mints, 6 boxes of samoas, and 4 boxes of tagalongs. What is the probability the next person buys a box of thin mints?

• $$\frac{1}{2}$$  

• $$50\%$$  

• $$5\%$$  

• $$0.5$$  

Multiple Select

I can determine the probability of compound events given the sample space.

What is the probability of choosing a sweater, khakis, and sandals?

• $$\frac{1}{12}$$  

• $$8.3\%$$  

• $$0.08\overline{3}$$  

• $$83\%$$  

Multiple Select

I can use lists or tree diagrams to determine the probability of compound events.

If you were to flip a quarter three times, what is the probability you would flip two heads and one tails?

(hint: make a list or tree diagram of possible outcomes first!)

• $$\frac{3}{8}$$  

• $$\frac{1}{8}$$  

• $$37.5\%$$  

• $$12.5\%$$  

Multiple Choice

I can use lists or tree diagrams to determine the probability of compound events.

Rylan has three pairs of socks (orange, white, and black), two jerseys (black and white), and two hockey sticks (Warrior and Bauer). If randomly chosen, what is the probability Rylan would wear white socks, a white jersey, and use his Warrior stick?

• $$\frac{1}{12}$$  

• $$\frac{1}{6}$$  

• $$\frac{1}{3}$$  

• $$\frac{1}{24}$$