Applications using Sample Proportions Preview CT-STEM

Carrying out the 2 Samples and calculating the difference in sample proportions

What we really care about here is the DIFFERENCE between our two proportions.

Let p₁ be the true proportion of Evanston black drivers stopped in traffic stops.

Let p₂ be the true proportion of all black residents in Evanston.

Please answer the questions below.

Question 6.1

What does it mean in context if p₁ - p₂ is POSITIVE?

Question 6.2

What does it mean in context if p₁ - p₂ is ZERO?

Question 6.3

What does it mean in context if p₁ - p₂ is NEGATIVE?

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