Introduction to Probability · Problem 8.2.6

Central Limit Theorem — Grinstead & Snell

Mathematics — Probability · law-of-large-numbers-continuous

Problem

If XX is normally distributed, with mean μ\mu and variance σ2\sigma^2, find an upper bound for the following probabilities, using Chebyshev's Inequality. (a) P(∣X−μ∣≥σ)P(|X - \mu| \geq \sigma). (b) P(∣X−μ∣≥2σ)P(|X - \mu| \geq 2\sigma). (c) P(∣X−μ∣≥3σ)P(|X - \mu| \geq 3\sigma). (d) P(∣X−μ∣≥4σ)P(|X - \mu| \geq 4\sigma). Now find the exact value using the program NormalArea or the normal table in Appendix A, and compare.

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