Mathematics · Normal Distribution
A continuous random variable Y is normally distributed with mean (μ) = 122 and standard deviation (σ) = 14. Find P(125 < Y < 139). (Given standard normal cumulative values: Φ(1.21) ≈ 0.8869 and Φ(0.21) ≈ 0.5832)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.5832
- 20.3037✓
- 30.2145
- 40.8869
Correct answer
0.3037
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