BUSS1020 Lecture Notes - Lecture 10: Negative Number

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5 Jun 2018

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If the two variables are the same then pooled variance (e.g. calorie estimates from fat

people vs skinny people)

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If the two variables are different/testing different things then unequal variance (car and

truck)

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Decide between pooled or unequal variance:

Comparing the means of two independent populations

10. Hypothesis Testing: Two Sample Tests

Sunday, 20 May 2018

4:45 PM

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Example for assumed equal:

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How to calculate df for this question:

Excel:

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