Types of probability Models

What is the probability of spinning green?

• 0
• 1/4
• 1/2
• 3/4

when all the probabilities in a probability model are not equivalent to each other

• probability model

• uniform probability model

• non-uniform probability model

• tree diagram

• Uniform

• Non-Uniform

What is a Complement in probability?

• Saying-- You look very nice today.

• Probability of an event happening

• Probability of an event NOT happening

• Not here

What is the complement of choosing a red marble if there are 8 red marbles in a jar of 15?

• P' = 3/15

• P' = 7/15

• P' = 8/15

• P' = 15/8

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

• 6
• 12
• 24
• 36

The cafeteria is serving three kinds of sandwiches:  tuna (T), chicken, (C), and peanut butter (P).  They are also serving a choice of two drinks:  milk (M) or water (W).  Which shows the complete set of possible combinations?

• TW, CW, PW
• TW, TM, TC, CW, PW
• TW, TM, CW, CM, PW, PM
• TCP, MW

Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?

• 1/4

• 1/2

• 2/4

• 3/4

What is the sample space?

• 6 bears

• orange, green, red, white, yellow

• 2 red, 1 green, 1 orange, 1 yellow, 1 white

• 2 , 1, 1, 1, 1

Draw a tree diagram in your math workbook.  Then answer this question. A girls' choir is choosing a uniform for their concert. They can pick red, green, or purple sweaters, and they can pick tan, white, or black skirts. The shoes they need come in gold and black. Assuming all the colors go together, how many different combinations can the choir pick?

• 3 combinations
• 8 combinations
• 12 combinations
• 18 combinations