Quiz 18b

1. Quiz 18b

2. Predict how I would grade the 4 assumptions on a 5 point scale?

3. Student example #1: • S • N • I • P

4. Answer: • 0 points

5. Student example #2 • SRS • Independence • Normality • Population at least 10n

6. Answer: • 1 point….this is just a listing

7. Student example #3 • SRS- the pythons were randomly selected as stated in the problem • Normality of the sampling distribution may be a problem since we don’t know the shape of the population and the sample size is less than 40. Most likely, the lengths of pythons vary close to normal, so 30 is probably a large enough sample. • Independence of subjects is not stated; however it is a reasonable assumption since the sample was selected randomly • Population is large

8. Answer • 4 out of 5 points due to the first three being stellar but the last one is wrong

9. How would the last one look to get 5/5 points?

10. The population must be at least 10 times the sample size. 10(30) = 300. It is reasonable to assume that there are 300 adult reticulated pythons in the population.

12. Answer: • B

14. Answer: • D

16. Answer: • A

18. Answer: • E

20. Answer: • B

22. Answer: • C

24. Answer: • B

26. Answer: • B

28. Answer: • D

30. Answer: • D

32. Answer: • D

34. Answer: • A

36. Answer: • E

38. Answer: • B

40. Answer: • B