PAA Unit 8 Test Review

If a number cube is rolled once, which outcome is least likely to occur?

• rolling an odd number

• rolling a prime number

• rolling a number greater than 6

• rolling a number less than 4

A bag contains 4 yellow, 4 red, 6 blue, and 2 green marbles.  If you randomly choose one marble from the bag, which statement best describes what will likely occur? 

• You will certainly pick a blue marble.

• You will most likely pick a green marble.

• You are equally likely to pick a red or green marble.

• You are equally likely to pick a red or yellow marble.

You spin a spinner with five equal sections labeled A, B, C, D, and E.  Then, you roll a number cube with sides numbered 1 through 6.  What is the probability that you get a vowel and an even number? 

• 1/10

• 1/5

• 2/5

• 1/2

The table below represents how many of each color marble you own. You randomly select one marble at a time and return it to your collection.  You pick a total of four marbles.  What is the probability you select a blue or green marble, then an orange or red marble, then a blue, and then an orange marble?

• 125/250

• 175/500

• 3/100

• 1/4

A quarter is flipped 3 times.  Which tree diagram shows all possible outcomes? 

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An event is 2 times as likely as its complement.  What is the probability of the event?

• 1/4

• 1/3

• 2/3

• 3/4

The table below shows the bowling scores of 125 students. What is the experimental probability that the next student will have a score that is 100 or more?

• 35/125

• 30/125

• 45/125

• 97/125

You’re playing a game which you win when the spinner lands on blue.  Which spinner would you be least likely to use? 

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You have 50 marbles. There are exactly 10 blue marbles.

1/5 of the marbles are red.

Of the remaining marbles, 20% are yellow.

The rest of the marbles are green.

 

A marble is selected at random.  Which outcome is most likely? 

• A blue marble is selected.

• A red marble is selected.

• A yellow marble is selected.

• A green marble is selected.

You have 2 dimes, 4 nickels, 10 pennies, and 2 quarters.  What is the probability that a coin drawn at random is not a penny? 

• 10/18

• 4/5

• 4/9

• 5/9