1. Copyright © 2013 Pearson Education, Inc. All rights reserved Chapter 7 Inferences Based on a Single Sample Estimation with Confidence Intervals

2. Copyright © 2013 Pearson Education, Inc. All rights reserved 7.1 Identifying and Estimating the Target Parameter

3. 7 - 3 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

4. 7 - 4 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

5. 7 - 5 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

6. 7 - 6 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

7. Copyright © 2013 Pearson Education, Inc. All rights reserved 7.2 Confidence Interval for a Population Mean: Normal (z) Statistics

8. 7 - 8 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.1 Sampling distribution of

9. 7 - 9 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.1

10. 7 - 10 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.2 SAS printout with summary statistics and 95% confidence interval for data on 100 hospital stays

11. 7 - 11 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

12. 7 - 12 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.3 Confidence intervals for  : 10 samples

13. 7 - 13 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.4 Locating z  /2 on the standard normal curve

14. 7 - 14 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

15. 7 - 15 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.5 The z value (z.05 ) corresponding to an area equal to.05 in the upper tail of the z-distribution

16. 7 - 16 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.2

17. 7 - 17 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

18. 7 - 18 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

19. 7 - 19 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.6 MINITAB printout with descriptive statistics and 90% confidence interval for Example 7.3

20. 7 - 20 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

21. Copyright © 2013 Pearson Education, Inc. All rights reserved 7.3 Confidence Interval for a Population Mean: t-Statistic

22. 7 - 22 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.7 Standard normal (z) distribution and t-distributions

23. 7 - 23 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.3

24. 7 - 24 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.8 The t. 025 value in a t-distribution with 4 df, and the corresponding z.025 value

25. 7 - 25 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.4

26. 7 - 26 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.9 SPSS confidence interval for mean blood pressure increase

27. 7 - 27 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

28. 7 - 28 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

29. 7 - 29 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.5

30. 7 - 30 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.10 MINITAB printout with descriptive statistics and 99% confidence interval for Example 7.5

31. 7 - 31 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.11 MINITAB stem-and-leaf display of data in Table 7.5

32. 7 - 32 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

33. 7 - 33 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table SIA7.1

34. 7 - 34 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure SIA7.1 MINITAB confidence interval for mean overpayment

35. Copyright © 2013 Pearson Education, Inc. All rights reserved 7.4 Large-Sample Confidence Interval for a Population Proportion

36. 7 - 36 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.12 Sampling distribution of

37. 7 - 37 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

38. 7 - 38 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

39. 7 - 39 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

40. 7 - 40 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.6

41. 7 - 41 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.13 MINITAB printout with 90% confidence interval for p

42. 7 - 42 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

43. 7 - 43 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure SIA7.2 MINITAB confidence interval for coding error rate

44. Copyright © 2013 Pearson Education, Inc. All rights reserved 7.5 Determining the Sample Size

45. 7 - 45 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.14 Relationship between sample size and width of confidence interval: hospital-stay example

46. 7 - 46 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.15 Specifying the sampling error SE as the half-width of a confidence interval

47. 7 - 47 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

48. 7 - 48 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.16 Specifying the sampling error SE of a confidence interval for a population proportion p

49. 7 - 49 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

50. 7 - 50 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.17 Specified reliability for estimate of fraction defective in Example 7.10

51. Copyright © 2013 Pearson Education, Inc. All rights reserved Confidence Interval for a Population Variance (Optional) 7.6

52. 7 - 52 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.18 Several x 2 Probability Distributions

53. 7 - 53 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Procedure

54. 7 - 54 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Table 7.7

55. 7 - 55 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Definition

56. 7 - 56 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.19 MINITAB descriptive statistics for fish weights, example 7.11

57. 7 - 57 Copyright © 2013 Pearson Education, Inc.. All rights reserved. Figure 7.20 MINITAB histogram of fish weights, Example 7.11