a) In the textbox given, explain the strategy that you used to determine your answer.b) Fill in your answer. The mark for each question is given at the introduction to the questions to be completed

8. (two marks) The expression "50-50 chance" means a probability of a. C. 50 50 b. 50% d. none of the above 9. (two marks) The probability of Joan being elected to the students' council is 60%. If 1280 students vote for the students' council, how many are expected to vote for Joan? a. 21 b. 213 c. 512 d. 768 10. (two marks) A bank finds that 32% of its loans to new small businesses become delinquent. If 500 of these small businesses are selected at random, how many are likely to have delinquent loans? a. 32 b. 80 c. 160 d. 320 11. (two marks) Traffic counters checking a particular intersection find that of the 6854 private vehicles using the intersection, 5620 have only one person in them. What percentage of the vehicles using that intersection have only one person in them? a. 12% b. 22% c. 60% d. 82% 12. (two marks) Four students are running for student council president. Of 30 students polled, 13 chose Mike, 3 chose Patricia, 7 chose Brian, and 7 chose Karen. What is the probability, as a percent, of a girl winning the student council president position? a. 10% b. 30% c. 33% d. 39% 13. (two marks) Rick is able to stop 90% of the shots on goal. If he faces 31 shots on goal, how many goals are likely to be scored on him? a. b. 6 9 d. 10 14. (two marks) A school runs a lucky 7 lottery for fundraising. Each ticket has 3 numbers from 1 to 7. If you buy I ticket, what is the probability that you have the winning ticket? b. 1 d. 343 49 15. (two marks) Predictions based on a sample taken from a normally distributed population are more accurate when a. the sample size is small. b. the sample size is large. c. the sample is taken from only one geographical part of the area. d. the sample population is all the same age