I introduce the t-distribution and work through an example of a 1 Sample Mean t-Confidence Interval. EXAMPLE AT 9:34
Some annotations are included:
Normality: With n greater than 30 the Central Limit Theorem ensures the sampling distribution of averages will be approximately Normal. Make a connection between your problems n and standard size of 30.
In Example:
Normality: As long as the population distribution has no outliers and no strong skewness, the Central Limit Theorem should ensure the sampling distribution of sample means will be approximately Normal.
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