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Unformatted text preview: - prediction interval for a new response at x is b x t / 2 ,n-1 v u u t MSE 1 + x 2 n i =1 x 2 i ! . 2. Do not use lm() in this question. Consider the following data: x y 1 2 2 5 3 6 4 8 5 9 (a) Fit the regression through the origin model and estimate the error variance. (b) Compute the standard error estimate of b and obtain a 95% condence interval for . (c) Compute a 95% condence interval for E [ Y | x = 4 . 5]. (d) Give a 95% prediction interval for a new response at x = 4 . 5. 3. Repeat the previous question using the R function lm() ....
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This note was uploaded on 11/25/2010 for the course AS 3859 taught by Professor Braun during the Fall '10 term at UWO.
- Fall '10