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Unit 4: Inference for Quantitative Data: Means

Sampling Distributions for the Difference Between Two Sample Means

Find the mean and standard deviation of the difference between two sample means, check when a normal model fits it, and use it to find probabilities.

Topic 4.6 · 10 min read

This lesson comes with the AP Statistics plan

In this lesson

  1. 01The difference in sample means is a random variable
  2. 02Why the variances add
  3. 03When a normal model fits
  4. 04Conditions for using the formulas
  5. 05Worked examples
  6. 06Where students lose points

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