1. Problem 1

2. Problem 2

3. Problem 3

4. Problem 4
Predict the total number of students at Moorsville Middle School who prefer Horror movies.

5. Problem 5

6. Problem 6

7. Problem 7
Determine whether each is a population characteristic or a sample statistic: a. b. c. d. e.

8. Problem 8
a. What percent of the students in the class have brown hair?
b. What percent of the students are female and chose Reality as their favorite type of TV show?
c. What percent of the students spend at least 2 hours doing homework every week?
d. If the results from this class were generalized to the entire 7th grade, 340 students, how many would be expected to not have a cell phone?

9. Problem 9
Determine if each sample is random or not random… a. b. c. d. e.

10. Problem 10

11. Problem 11
For each group, determine which sample is better for making a prediction.

12. Problem 12

13. Problem 13
For each scenario, would you survey a sample or a population? a. b. c. d.

14. Problem 14

15. Problem 15

16. Problem 16

17. Problem 17

18. Problem 18

19. Problem 19
A reality show chooses contestants to compete for cash and prizes. The contestants chosen are divided into four clans as shown. You are in Clan 1.
One contestant is randomly chosen from all the contestants to complete an obstacle course.
1. Is any clan more likely to have a member chosen?
2. What is the probability that you are chosen?
3. What is the probability that a member from your clan is chosen?
4. What is the probability that a male contestant is chosen?
5. After the first round, 3 contestants from Clan 1, 5 contestants from Clan 2, 1 contestant from Clan 3, and 4 contestants from Clan 4 are eliminated. Another contestant is then randomly chosen from all the remaining contestants. Is any clan more likely to have a member chosen? If so, which clan?

20. Problem 20

21. Problem 21

22. Problem 22
Tammy was running for class president. She wanted to know if she had a good chance of winning the election, so she decided to have her friends help her with surveys.
Jonathan surveyed a random sample of 10 students from the school. Seven of them said they would vote for Tammy. If there are 230 students in the school, and all of them vote, what is Jonathan’s best estimate of the number of students who would vote for Tammy?
Kimberly had more time to conduct surveys and decided to survey a random sample of 30 students from the school. In Kimberly’s sample, 24 students said they would vote for Tammy. What is Kimberly’s best estimate of the number of students in the school who would vote for Tammy?
Who is likely to have a better estimate of the number of students who will vote for Tammy?

23. a. Choosing 2 tiles whose sum is 12
Problem 23
You randomly choose one of the tiles. Without replacing the first tile, you choose a second tile. Find the probability of each compound event:
a. Choosing 2 tiles whose sum is 12
b. Choosing a 6 and then a number greater
than 4

24. Problem 24

25. Problem 25

26. Problem 26

27. Problem 27

28. Problem 28

29. Problem 28

30. Problem 30