02.10.22 - Probability

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

What is the the probability of NOT landing on purple?

• 2/5

• 1/5

• 4/5

• 3/5

A bag has 10 marbles. What is the probability of pulling a red?

• 3/10

• 3/9

• 1/9

• 1/3

What is the probability of pulling a red marble out of a jar of marbles that have 10 green marbles, 7 red marbles and 3 blue marbles?

• 1/7
• 7/20
• 7/10
• 3/10

What color are you most likely to pick?

• Red

• Blue

• Green

• Yellow

Theoretical Probability is?

• What Should happen
• What does happen
• What Will Happen
• What I want to Happen

Experimental Probability is:

• What Will happen 
• What actually happens
• What should happen
• What I think Happens

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

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

• 12 combinations

• 8 combinations

• 18 combinations

In a random survey of 50 students at Great Middle School, 32 said chocolate was their favorite flavor of yogurt. The school has 450 students. How many of them are likely to select chocolate as their favorite flavor? 

• 144
• 162
• 225
• 288