AP Statistics· difficulty 4/5
Population strongly skewed, σ = 30, n = 100. Sampling distribution of x̄ is
Approximately normal, SD = 3 (CLT applies; n=100 large)
Strongly skewed, SD = 3
Cannot say
Approximately normal, SD = 30
Explanation
CLT (n large) → x̄ ~ N(μ, σ/√n) approximately; SE = 30/10 = 3.
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