Cholesterol levels are N(200, 25). Doctors flag the top 2.5% as high risk.
Approximately what cholesterol value defines this threshold?
- A
200
- B
225
- C
275
- Dcheck_circle
250
Explanation
The upper 2.5% lies above μ + 2σ = 200 + 50 = 250.
The Normal Distribution
AP Statistics· difficulty 4/5
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