Confidence Interval Estimation Sigma Unknown

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This tutorial continues a discussion of Confidence Interval Estimation, and the case of Sigma Unknown is illustrated using an example. The t distribution and t table is introduced and looking up values in the t table is demonstrated using degrees of freedom and level of significance divided in half (alpha divided in half)
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  1. Learn Something
  2. Confidence Interval Estimation Sigma Unknown
  3. T distribution
  4. t table
  5. degrees of freedom
  6. level of significance
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