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Confidence Intervals and Hypothesis Testing: Key Formulas and Procedures

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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 Proportion

  • Percorso guidato
    Constructing Confidence Intervals for Proportions Example 1
    06:38
  • Percorso guidato
    Finding the Minimum Sample Size Needed for a Confidence Interval
    04:08
  • Percorso guidato
    Constructing Confidence Intervals for Proportions Example 2
    04:24

Confidence Intervals for Population Means - Excel

  • Percorso guidato
    Finding Confidence Intervals for Means (Sigma Unknown)
    06:50
  • Percorso guidato
    Finding Confidence Intervals for Means (Sigma Known)
    06:12
  • Percorso guidato
    Finding Confidence Intervals for Means (Sigma Known) Example 1
    06:16

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

Critical Values and Rejection Regions

  • Percorso guidato
    Critical Values and Rejection Regions
    06:25
  • Percorso guidato
    Performing Hypothesis Test with Critical Values Example 1
    03:32
  • Percorso guidato
    Performing Hypothesis Test with Critical Values
    05:37

Standard Normal Distribution

  • Percorso guidato
    Z-Scores from Probabilities
    08:50
  • Percorso guidato
    Probabilities Between Two Values
    03:50
  • Percorso guidato
    Finding Standard Normal Probabilities using z-Table
    09:47

Finding Probabilities, Z Values, and X Values with the Normal Distribution-Excel

  • Percorso guidato
    Finding Z-Scores and X Values from Probabilities-Excel
    08:09
  • Percorso guidato
    Finding Z-Scores and X Values from Probabilities-Excel Example 2
    03:05
  • Percorso guidato
    Finding Probabilities from Z-Scores and X Values-Excel Example 1
    05:07