For independent SRSs from two populations, mean of x̄₁ − x̄₂ is
- A
(μ₁ + μ₂)/2
- Bcheck_circle
μ₁ − μ₂
- C
0
- D
μ₁ + μ₂
Explanation
Linearity of expectation.
Sampling Distributions for Differences in Sample Means
AP Statistics· difficulty 4/5
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