1. Chapter 7 Inferences Based on a Single Sample
Estimation with Confidence Intervals

2. Identifying and Estimating the Target Parameter
7.1
Identifying and Estimating the Target Parameter

3. Definition
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4. Procedure
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5. Definition
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6. Definition
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7. Confidence Interval for a Population Mean: Normal (z) Statistics
7.2
Confidence Interval for a Population Mean: Normal (z) Statistics

8. Figure 7.1 Sampling distribution of
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9. Table 7.1
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10. Figure 7.2 SAS printout with summary statistics and 95% confidence interval for data on 100 hospital stays
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11. Definition
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12. Figure 7.3 Confidence intervals for m: 10 samples
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13. Figure 7.4 Locating za/2 on the standard normal curve
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14. Definition
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15. Figure 7. 5 The z value (z. 05) corresponding to an area equal to
Figure 7.5 The z value (z.05) corresponding to an area equal to .05 in the upper tail of the z-distribution
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16. Table 7.2
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17. Procedure
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18. Definition
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19. Figure 7.6 MINITAB printout with descriptive statistics and 90% confidence interval for Example 7.3
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20. Procedure
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21. Confidence Interval for a Population Mean: t-Statistic
7.3
Confidence Interval for a Population Mean: t-Statistic

22. Figure 7.7 Standard normal (z) distribution and t-distributions
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23. Table 7.3
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24. Figure 7.8 The t.025 value in a t-distribution with 4 df, and the corresponding z.025 value
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25. Table 7.4
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26. Figure 7.9 SPSS confidence interval for mean blood pressure increase
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27. Procedure
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28. Definition
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29. Table 7.5
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30. Figure 7.10 MINITAB printout with descriptive statistics and 99% confidence interval for Example 7.5
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31. Figure 7.11 MINITAB stem-and-leaf display of data in Table 7.5
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32. Procedure
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33. Table SIA7.1
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34. Figure SIA7.1 MINITAB confidence interval for mean overpayment
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35. Large-Sample Confidence Interval for a Population Proportion
7.4
Large-Sample Confidence Interval for a Population Proportion

36. Figure 7.12 Sampling distribution of
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37. Procedure
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38. Procedure
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39. Definition
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40. Table 7.6
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41. Figure 7.13 MINITAB printout with 90% confidence interval for p
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42. Procedure
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43. Figure SIA7.2 MINITAB confidence interval for coding error rate
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44. Determining the Sample Size
7.5
Determining the Sample Size

45. Figure 7.14 Relationship between sample size and width of confidence interval: hospital-stay example
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46. Figure 7.15 Specifying the sampling error SE as the half-width of a confidence interval
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47. Procedure
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48. Figure 7.16 Specifying the sampling error SE of a confidence interval for a population proportion p
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49. Procedure
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50. Figure 7.17 Specified reliability for estimate of fraction defective in Example 7.10
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51. Confidence Interval for a Population Variance (Optional)
7.6
Confidence Interval for a Population Variance (Optional)

52. Figure 7.18 Several x2 Probability Distributions
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53. Procedure
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54. Table 7.7
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55. Definition
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56. Figure 7.19 MINITAB descriptive statistics for fish weights, example 7.11
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57. Figure 7.20 MINITAB histogram of fish weights, Example 7.11
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