Name: _____________________________________________
Geometry: 13.1 Worksheet
Date: __________
Mod: __________
Directions: Use a pencil and answer each of the following. Give probability answers as either
reduced fractions or percentages rounded to one decimal place.
For #1 – 4, you roll a standard number cube (die) 10 times. The results are show below:
6, 4, 6, 1, 5, 2, 4, 2, 4, 3
Find the experimental probability (“what did happen”) of each outcome:
1. P(rolling a 5)
2. P(rolling a 6)
3. P(rolling an even number)
4. P(rolling a 1)
5. What is the experimental probability of rolling an odd number on a standard number cube?
6. For 50 rolls of a standard number cube, predict the number of rolls that will result in an odd
number.
For #7 – 12, find the theoretical probability (“what should happen”) of each outcome:
7. P(rolling a 5)
8. P(rolling a 6)
9. P(rolling an even number)
10. P(rolling a number greater than 2)
11. P(rolling an odd number)
12. P(rolling a multiple of 3)
For #13 – 16, a bag contains 2 red ping-pong balls, 3 green ping-pong balls, 3 blue ping-pong
balls, and 1 yellow ping-pong ball. Find the probability of randomly selecting each outcome:
13. P(not red)
14. P(not green)
15. P(not blue)
16. P(not yellow)
For #17 – 24, two standard number cubes are rolled. Find each probability:
17. Complete the table below for the SUM
of two standard number cubes.
18. Complete the table below for the PRODUCT
of two standard number cubes.
19. P(a sum equal to 2)
20. P(sum not equal to 2)
21. P(a product equal to 15)
22. P(a sum greater than 6)
23. P(a product less than or equal to 2)
24. P(a sum equal to 12)
Multiple Choice: Choose the best answer
______ 25. A coin is tossed 30 times and lands on heads 17 times. What is the experimental
probability of the coin landing on tails?
[A]
17
30
[B]
1
2
[C]
13
30
[D]
15
30
______ 26. What is the theoretical probability of randomly choosing a science book from a shelf
that holds 3 mystery books, 5 science books, and 4 nature books?
[A]
5
12
[B]
1
3
[C]
1
4
[D]
7
12
______ 27. What is the complement of rolling a 2 or 5 on a number cube?
[A]
{2, 5}
[B]
{1, 3, 4, 6}
[C]
{1, 3, 5, 6}
[D]
{7}