Introduction to Confidence Intervals and test for two parameters

9 important questions on Introduction to Confidence Intervals and test for two parameters

DF — Unequal variances

df = min(n₁, n₂) − 1

DEPENDENT SAMPLES (PAIRED t-TEST)

This is when two values belong to the same object/person (midterm vs endterm, before vs after, left eye vs right eye).

Paired T-test - 1. Hypotheses

Answer
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Paired T-test - 2. Test Statistic

Answer

Independent Samples & Unequal Variances - 1. Hypotheses

Answer:

Independent Samples & Unequal Variances - 3. Degrees of freedom

m = min(n₁, n₂) − 1

Independent Samples & Equal Variances - 1. Hypotheses

Answer:

Independent Samples & Equal Variances - 2. Test Statistic

Answer

Independent Samples & Equal Variances - 3. Degrees of Freedom

df = n 1​ + n 2​ − 2

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