**Unformatted text preview: **from normal distribution, ±nd a 95% CI for the pop-ulation 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 Self-study 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, T-Distribution, 1 degrees, Student's t-distribution, Moo K. Chung