Unformatted text preview: from normal distribution, ±nd a 95% CI for the population mean fat content. > x<c(25.2,21.3,22.8,17.0,29.8,21.0, 25.5,16.0,20.9,19.5) > sd(x) [1] 4.13414 > mean(x)+qt(0.975,9)*sd(x)/sqrt(10) [1] 24.85739 > mean(x)qt(0.975,9)*sd(x)/sqrt(10) [1] 18.94261 Assuming X i ∼ N ( μ, σ 2 = 4 . 13 2 ), ±nd a 95% CI for μ . > mean(x)+qnorm(0.975)*4.13/sqrt(10) [1] 24.45975 > mean(x)qnorm(0.975)*4.13/sqrt(10) [1] 19.34025 Selfstudy problems Exercise 7.29., 7.33. Assignment III. Due Feb 27, 11:00am. Exercise 7.32, 7.34., 7.42., 7.44., 8.10. The ±rst midterm will cover chapters 6,7 and 8.1. Sample midterm problems will be posted on Feb. 25....
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 Fall '04
 Chung
 Statistics, Normal Distribution, TDistribution, 1 degrees, Student's tdistribution, Moo K. Chung

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