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Chapter 9: Confidence Intervals

Erin Vales English 18 cards

Chapter 9: Confidence Intervals

Cards in this deck (18)

  1. 1Inferential Statistics objectiveto make statements about population parameters based on statistics computed from a sample
  2. 2EstimateEstimate
  3. 3Confidence IntervalConfidence Interval
  4. 4Assumptions with Confidence Intervals for Population Mean (when population standard deviation is known)Assumptions with Confidence Intervals for Population Mean (when population standard deviation is known)
  5. 5Interpretation of Confidence Intervals for Population Mean (when population standard deviation is known)Interpretation of Confidence Intervals for Population Mean (when population standard deviation is known)
  6. 6Confidence Interval for Population Mean Example (1) **population standard deviation KNOWN**Confidence Interval for Population Mean Example (1) **population standard deviation KNOWN**
  7. 7Obtaining precise interval for High ConfidenceObtaining precise interval for High Confidence
  8. 8Choosing a sample sizeChoosing a sample size
  9. 9Choosing a sample size ExampleChoosing a sample size Example
  10. 10Student's t distributionused when population standard deviation is UNKNOWNStudent's t distribution
  11. 11Student's t distribution (cont.)Student's t distribution (cont.)
  12. 12Confidence Interval for Population Mean **when population standard deviation is UNKNOWN**Confidence Interval for Population Mean **when population standard deviation is UNKNOWN**
  13. 13Confidence Interval for Population Mean Example (1) **when population standard deviation is UNKNOWN**Confidence Interval for Population Mean Example (1) **when population standard deviation is UNKNOWN**
  14. 14Confidence Interval for Population Proportion (pi)Confidence Interval for Population Proportion (pi)
  15. 15Confidence Interval for Population Proportion (pi) Example (1)Confidence Interval for Population Proportion (pi) Example (1)
  16. 16Confidence Interval for Population Proportion (pi) Example (1) (cont.)Confidence Interval for Population Proportion (pi) Example (1) (cont.)
  17. 17Choosing the Sample Size Confidence Interval for Population Proportion (pi)Choosing the Sample Size Confidence Interval for Population Proportion (pi)
  18. 18Choosing the Sample Size Confidence Interval for Population Proportion (pi) Example (2)Choosing the Sample Size Confidence Interval for Population Proportion (pi) Example (2)

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Estimating parameters with points and intervals
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Erin Vales
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