Last Pre Exam Blog Post!

Hey, you know that quote in our hallway?

"By failing to prepare, you are preparing to fail." (ma boy Benjamin Franklin)

In other words....STUDY! Your success on tomorrow's exam will be strongly correlated with your preparation! For the next 24 hours you have 2 jobs: prepare yourself as best you can, and then show up tomorrow and put your best foot forward!

You do not have to turn in the Stat Rap Assignment--if you prefer, you can complete this assignment in class on Friday! 

Here are alllllll of the answer keys you need from the many resources you can you to study!

Hypothesis Test Practice and Finding N; Key

Univariate Data (Andover/Hebron) and Normal Model Review:

Probability! AP Released MC (Chapters 16, 17):

• Queston about college bound seniors....C
• In a certain game, a fair die is rolled.....C
• A manufacturer makes lightbulbs....D
• The XYZ Office Supplies Company.....B
• In a carnival game...skip this question! We would use binompdf(4, 0.2, 2) to answer this!

AP Statistics Exam: Bivariate Data

1. A
2. A
3. B
4. A
5. D
6. C
7. C
8. E
9. A
10. E
11. B
12. C
13. D
14. C
15. B
16. C
17. C
18. E
19. E
20. C
21. C (r is getting weaker--but it's negative to start, so weaker = closer to 0 = increasing; the slope gets steeper, so it's more negative--which is decreasing)

Identifying the Correct Test/Interval (Handed out Today)

• "The Colorado Rocky Mountain..." = Chi-squared test for Independence
• 2000: Baby Walkers = 2 Sample T Test
• 2000: Anthropologists have discovered = T Interval
• 2001: A growing number of employers = Paired T Test
• 2002: Each person in a random sample = One Proportion Z Interval
• 2005: A researcher believes... = Paired T Interval
• 2004: Thre principal at Crest Middle School = 2 Sample T Test
• 2006: A large company has two shifts...  = 2 Proportion Z Interval
• 2006: Patients with heart attack symptoms... = 2 Sample T Interval

Probability Bingo Review:

1. 0.95
2. 0.9999996875
3. 0.0407
4. 0.010475
5. 0.00368 (*There is a typo at the top of this slide; it should say, P(win prize) = 0.05, not anything about upgrades)
6. 0.90
7. 0.85
8. 1.73
9. 0.2824
10. 0.0119
11. 0.102788
12. 0.24
13. 0.158655
14. 0.000655
15. 0.5818
16. 2.8 E -10
17. 0.99999
18. 0.76
19. 0.06
20. 0.04
21. 0.0447
22. 0.57143
23. 0.105
24. 0.4994