# HW#12 - HW#12#9 a 1.095 β = b 1 5.475 β = c 10...

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Unformatted text preview: HW#12 Nov 29, 2006 #9) a) 1 .095 β = b) 1 5 .475 β- = - c) 10 15 .12 .095(10) .83 .12 .095(15) 1.305 Y Y μ μ-- = - + = = - + = d) 10 .025 .83 .835 .83 ( .835) ( .2) .421 .25 .84 .83 ( .840) ( .4) .345 .25 Y P Y P Z P Z P Y P Z P Z σ μ μ- = = =- = = =- = = = #18) a) 1 2 15(987.645) (1425)(10.68) ˆ .00736 15(139,037.25) (1425) 10.68 ( .00736)(1425) ˆ 1.41 15 1.41 .00736 y x β β- = = --- - = = =- b) 1 ˆ .00736 β = - c) ( 29 1 1 1 1 9 9 ˆ ˆ ˆ ˆ ˆ 32 32 1.176 .0132 5 5 ˆ 1.176 ˆ .0132 y x x x new new β β β β β β β = + + = + + =- = = - d) 1.41 .00736(200) .0608 y =- = - , but deflection cannot be negative 31) a) 1 ˆ .00736 ˆ 1.41 7.8718 (1.41)(10.68) ( .00736)(987.645) .04925 SSE β β = - = =-- - = b) .00736 (2.160)(.001017) .00736 .00220 ( .00956, .00516)- = - = -- 36) a) ( 29 1 2 1 1 1 .005,14 2 2 2 ˆ .01 .005 2 15 14 402 11,098 3.725 ˆ 1.7035 : 1 : 1 2.977 402 11,098 324.4 15 3.725 .2068 324.4 1.7035 1 3.40 2.977, so reject .2068 i i a i xx i xx n df x x s H...
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## This note was uploaded on 03/31/2008 for the course CEE 3040 taught by Professor Stedinger during the Fall '08 term at Cornell.

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HW#12 - HW#12#9 a 1.095 β = b 1 5.475 β = c 10...

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