For x̄ ~ N(50, 2), P(48 < x̄ < 52) ≈
- A
0.99
- B
0.34
- C
0.95
- Dcheck_circle
0.68
Explanation
Range μ ± 1·SE → about 68%.
Sampling Distributions for Sample Means
AP Statistics· difficulty 4/5
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AP Statistics· difficulty 4/5
For x̄ ~ N(50, 2), P(48 < x̄ < 52) ≈
0.99
0.34
0.95
0.68
Explanation
Range μ ± 1·SE → about 68%.
Want 10 more like this — adaptive to your weak spots?