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Keyboard: 1–4 pick • E = Explain • R = Sim 2000
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Compute probabilities and percentiles for a Normal(μ, σ). Left/right tails, between, and inverse (find k for a given area).
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What is P(X < k)?
Use z = (x−μ)/σ. Left: Φ(z). Right: 1−Φ(z). Between: Φ(z₂)−Φ(z₁). Inverse: k = μ + z·σ.
Simulation draws from N(μ,σ) via Box–Muller and estimates the event frequency.
Round: 1/10
Score: 0
Best: 0
Timer: —