23839 87 87 39 9898 p 2 2 xi x 2 1 226226177 2330855

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Unformatted text preview: h = h28 28 X= 98%98% 98%98% [220[220238.238.39] .87 .87 39] 98%98% P 2+ 2 ¯ (Xi X )2 1 [226[226.177 .233.0855] .177 233 0855] 98%98% H0 : 1 = 0 HA : 1 6= 0 F ⇤ > F (0.99, 1, 118) = 6.855 F ⇤ = 9.24 2 1 =0 H0 Prob. 2.34 (a)It would be more reasonable to consider them as random variables since X 3.588 R = 0.0726 = 7.26% p 2 (b) For correlation mr = + when X is 269 odels R = +0. considered a random variable, the results won’t 2 R change if we condition on the level of the X. X is a score from a test and depends on the outcome for each student. 2 ¯ ¯ b0 = Y b1 X ¯ ¯ ¯...
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This note was uploaded on 10/29/2012 for the course STAT W4315 taught by Professor Martinalindquist during the Spring '12 term at Columbia.

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