Conditional Probability Tree Diagram

What is the probability that you will get plain crust with ham on your pizza?

• 1/8

• 1/₂

• 1/₁₀

• 2/₁₀

The tree diagram shows the outcomes of rolling a die and flipping a coin.  
How many total outcomes are there?  

• 6

• 12

• 24

• 36

A tree diagram is useful in determining the __________of a probability experiment.

• result

• possible outcomes

• event

• none of the above

The tree diagram shows the outcomes of rolling a die and flipping a coin.

What is the probability of rolling a number that is less than 6 and then flipping a head?

• ²/₁₂

• ³/₁₂

• ⁴/₁₂

• ⁵/₁₂

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability that one is even and one is odd? Think: what do you do with the numbers on the tree branches?

• 1/2

• 1/4

• 3/4

• 1/3

A box contains 3 brand A batteries and 7 brand B batteries. 30% of brand A batteries are faulty and 40% of brand B batteries are faulty. A battery is selected at random and then checked to see if it is faulty. What is the probability that a faulty brand B battery is selected?

• 0.28

• 1/4

• 0.42

• 0.21

A box contains 3 brand A batteries and 7 brand B batteries. 30% of brand A batteries are faulty and 40% of brand B batteries are faulty. A battery is selected at random and then checked to see if it is faulty. What is the probability that a NON faulty brand A battery is selected?

• 0.21

• 0.09

• 0.28

• 0.25

James starts to draw a diagram for rolling two dice and recording whether a 6 is rolled or not. Finish the diagram and use it to find the probability of rolling no sixes.

• 25/36

• 10/12

• 2/12

• 2/36

James started to draw a diagram for rolling two dice and recording whether a 6 is rolled or not. Finish his diagram. What is the probability of rolling 2 sixes?

• 1/36

• 1/6

• 1/12

• 1/2

A bag contains 3 lemons and 2 limes. A piece of fruit is taken from the bag and not put back. Then a second piece is taken. What is the probability of taking two limes?

• 1/10

• 2/5

• 5/20

• 4/20