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Chapter 18: Inferences About Means – Confidence Intervals and Hypothesis Testing

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Introduction to Confidence Intervals

  • Percorso guidato
    Critical Values: z Scores
    04:46
  • Percorso guidato
    Introduction to Confidence Intervals
    06:33

Confidence Intervals for Population Mean

  • Percorso guidato
    Finding t-Values Using a TI-84
    05:47
  • Percorso guidato
    Critical Values: t-Distribution
    05:50
  • Percorso guidato
    Finding Confidence Intervals Using TI-84
    04:30

Steps in Hypothesis Testing

  • Percorso guidato
    Step 4: State Conclusion
    09:56
  • Percorso guidato
    Step 2: Calculate Test Statistic
    06:34
  • Percorso guidato
    Step 1: Write Hypotheses
    06:21

Performing Hypothesis Tests: Means

  • Percorso guidato
    Standard Deviation (σ) Unknown Example 3
    05:55
  • Percorso guidato
    Standard Deviation (σ) Known Example 1
    06:38
  • Percorso guidato
    Standard Deviation (σ) Known
    06:34

Hypothesis Testing: Means - Excel

  • Percorso guidato
    Performing Hypothesis Tests: Mean Sigma Known - Excel Example 1
    04:28
  • Percorso guidato
    Performing Hypothesis Tests: Mean Sigma Known - Excel
    05:10
  • Percorso guidato
    Performing Hypothesis Tests: Mean Sigma Unknown - Excel Example 4
    09:06

Sampling Distribution of the Sample Mean and Central Limit Theorem

  • Percorso guidato
    Central Limit Theorem Example 1
    02:33
  • Percorso guidato
    Central Limit Theorem
    05:14
  • Percorso guidato
    Sampling Distribution of Sample Mean
    06:53