Understanding Confidence Intervals: Estimating Population Means when Sigma is known (Z-Test)

Confidence Interval around population mean, known population standard deviation.
[00:01] Introduction: Point Estimates vs. Interval Estimates
[02:10] Role of the Central Limit Theorem and Sampling Distributions
[03:41] Deriving the Confidence Interval Formula (Standard Error & Z-Scores)
[05:04] Choosing Confidence Levels (90%, 95%, 99%) and Alpha
[07:55] Example 1: Calculating Confidence Intervals for Elephant Birth Weights
[11:17] Example 2: Comparing Fire Damage Costs (Tobacco vs. All Causes)
[13:01] JMP Tutorial: Using the Confidence Interval Calculator with Raw Data

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