Ex 3.2 - small sample 5(a 0.2131(b 6 7(a 0.4007(b 187.6161...

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Exercise 3.2 1. (a), 0.6211; (b), Expected value = 49.2929, standard deviation = 4.9995; (c), [43, 55]; 3. (a), 0.4163; (b), assume binomial distribution; (c), E(X) = 6, σ = 2 . 0494; (d), By empirical rule, P( within 1 standard deviation) = 0.68. Using binomial distribution, P( within 1 standard deviation) = 0.7796. Empirical rule is not so accurate when dealing with a
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Unformatted text preview: small sample; 5. (a), 0.2131; (b), 6; 7. (a), 0.4007; (b), 187.6161; 9. 0.6708; 11. (a), 0.8995; (b), 0.2418; 13. (a), 0.9250; (b), E(X)=2.5, σ X = 1 . 5259; (c), P(at least 1) = 0.9230, E(X)=2.5, σ X = 1 . 5411; 15. (a), 0.1826; (b), 0.0059; (c), 0.2413; 17. (a), 0.0226; (b), 0.0526; (c),0.4633; 1...
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