Probability and Statistics

Post Test

1. When rolling just die in a pair of dice, what are your chances of rolling a five
a. 1 in 2
b. 1 in 4
c. 1 in 5
d. 1 in 6

2. The study of predicting the chances that something will happen is called the study of-
a. Probability
b. Certainty
c. Chance
d. Guess making

3. How many different ways can you rearrange the letters of the word "ace"?
a. 4
b. 6
c. 8
d. 12

4. The best way to figure out the answer to #3 is by using a
a. List
b. Counting principle

5. If you are going to have either a steak or meat loaf and you get to choose between three vegetables, the total number of choices available would be best illustrated by -
a. Using the counting principle
b. A tree diagram
c. A list

6. In a seven digit phone number, you remember the first five digits. How many possible combinations would you have of the last two digits?
a. 10
b. 100
c. 1000
d. 10000

7. "One item is to be selected from each of two or more sets. The total number of possible combinations is the product of the number of items in each set." This describes the-
a. Way to form a list
b. Way to form the solution to a tree diagram
c. Counting principle

8. After you make a tree diagram, to determine the total number of choices, you
a. Count the branches at the lowest level
b. Multiply the number of branches times the number of branches
c. Take the sum of all the items in the diagram

9. How many possible combinations are on a combination lock with 40 numbers? (including zero)
a. 64
b. 640
c. 6400
d. 64000

10. A state uses license plates with both letters and numbers. Which type of digit offers more different possibilities.
a. More numbers than letters
b. More letters than numbers


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