2. Test Your Luck! Tricky Predictions Tricky Predictions Bias / Unbiased Probability 50 40 30 20 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50 10 20 30 40 50

3. Using a standard deck of cards, what is the probability that you draw a king and a queen in a row (without putting the first card back)? 4 663

4. Which is more likely: Drawing a face card from a standard deck of cards OR Rolling an even number on a dice twice in a row Face card: 3/13 or 23% Dice: 1/4 or 25%

5. Which is more likely: Rolling doubles on a pair of dice OR Choosing a King or Ace from a standard deck of cards? Doubles on Dice: 1/6 or 17% K or A: 2/13 or 15%

6. What is the probability that you draw a K, keep it, then draw another K? 1 221

7. 1 270,725 (4/52 x 3/51 x 2/50 x 1/49) What is the probability that you will be dealt four of a kind in Queens: Queen, followed by a Queen, followed by a Queen, followed by a Queen?

8. Random or Not Random: Sam survey’s every student in the school band to find out their favorite type of music.

9. Random or Not Random: Katie surveys every 5 th student who walks through the cafeteria doors to find out their favorite type of music.

10. Bob wants to find out if most students support using school money to purchase sports equipment. Which scenario is MOST likely to result in a random survey: A)Surveying every student attending the football game B)Selecting 50 students at random from the entire school directory C)Surveying every 10 th student entering the cafeteria during the 7 th grade lunch

11. Which situation would provide a random sample? A)Determining the most popular choice for a career in the country by surveying every 10 th student at UNO B)Determining the average income in Louisiana by surveying residents of Mandeville, New Orleans, and Lafayette C)Determining the favorite vegetable of 7 th graders in the district by surveying every 20 th student entering each 7 th grade classroom in the district

12. Order the situations from MOST likely (1) to LEAST likely (3) to provide a random sample based on the scenario: Kim is running for student council president. Her campaign manager, Johnny, wants to find out her approval ratings. He… A) Asks the volleyball and basketball team since she is the captain of both. B) Asks all the students in the library where she sometimes tutors in the mornings. C) Asks one student from every third-hour class. 321321

13. A random survey was conducted to see how people would vote for a new law. Of the 9,000 voters, 100 were surveyed. Seventy said they would vote yes and thirty said they would vote no. Based on the survey, how many voters are expected to vote yes on the proposal? 6,300 vote yes

14. A random survey was conducted to see how people would vote for a new a proposal on the ballot. 35 said they would vote yes, 58 said they would vote no, and 7 were undecided. Which of the following statement(s) is not true about the voters? A)Of the 9,000 registered voters, 3,500 are expected to vote yes. B)Of the 9,000 registered voters, 5,220 are expected to vote no. C)Based on the survey, there are 63 voters that are still undecided.

15. Lindsey takes a random sample to determine how many hours students study during the week. She receives 36 surveys back with the following results: 7 students say they study more than 10 hours a week, 15 say they study between 9-6 hours a week, 11 wrote that they studied between 5-3 hours a week, and 3 said they studied less than 2 hours a week. If there are 380 7 th grade students at Lindsey’s school, predict how many students study between 9-6 hours a week. 158 students

16. A survey was sent out at UNO to see what sports people prefer. Based on the survey, 15 said they prefer football, 11 said they liked baseball, 6 said volleyball, and 9 said soccer. If there are 2,300 students at the school, about how many students prefer soccer? 505 students

17. There are roughly 850 registered voters in Mandeville. A new proposition was on the ballot, so a surveyor sent out 75 surveys to see how the proposition would do before the voting day. 18 surveys were returned undecided, 32 returned voting yes, and the rest were voting no. Based on the results, what is the expected number of voters expected to vote no for the proposal? 283 voting no

18. A survey was sent out at Lakeshore to see what subject students prefer. Based on the survey, 15 said they prefer Social Studies, 11 said they liked Math, 6 said ELA, and 9 said Science. If 222 students voted ELA as their favorite subject, how many students are there all together at Lakeshore? 1,517 total students

19. 50 surveys were sent to parents at the beginning of the year to determine the outlook on the new scheduling system. Based on the results, 16 said they preferred the new system and the rest said they liked the old schedule better. If a total of 134 parents voted that they liked the old schedule, how many parents voted in all? 197 total votes

20. 6 out of 13 students at school are boys. If there 217 girls at the school, how many total students are there? 403 students

21. People at a zoo were surveyed to find out their favorite animals. The results were as follows: 13 said they liked the elephants, 19 choose the giraffes, 7 picked the alligators, 17 liked the monkeys, and 5 picked the snakes. Based on these results, if 290 people vote that they prefer giraffes the most, roughly how many would choose the alligators? 107 would say alligators

22. A florist is trying to determine what flower most people in her area prefer. She sends out a survey and gets the following results: 23 prefer roses, 13 like tulips, 19 choose sunflowers, and 9 like orchids. If 152 people order sunflowers this month, roughly how many will order roses? 184 would order roses

23. Pick a shape: Rhombus or Trapezoid Rhombus LOSE 10 points Trapezoid GET 10 points!!

24. Pick a number 1 – 10! If you picked 7 you GET 20 points!! If not, you LOSE 20 points

25. Pick a Letter of the Alphabet. If you picked A, J, L, P, or W you GET 30 points!! If not, pick another team to GET 30 points!

26. If you picked Navy you GET 40 points!! If not, you LOSE 20 points and another team of your choosing GETS 20 points! Pick a color: Blue, White, Navy

27. ROCK PAPER SCISSORS CHALLENGE!!! Your team picks a representative to play against a representative of another team. Best 2 out of 3 WINS 50 POINTS!