mont4e_sm_ch13_sec02 - CHAPTER 13 Section 13-2 13-1. a)...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CHAPTER 13 Section 13-2 13-1. a) Analysis of Variance for STRENGTH Source DF SS MS F P COTTON 4 475.76 118.94 14.76 0.000 Error 20 161.20 8.06 Total 24 636.96 Reject H and conclude that cotton percentage affects mean breaking strength. 35 30 25 20 15 25 15 5 COTTON STRENGTH b) Tensile strength seems to increase up to 30% cotton and declines at 35% cotton. Cotton Percentage Mean Strength 35 30 25 20 15 22 20 18 16 14 12 10 Scatterplot of Mean Strength vs Cotton Percentage Individual 95% CIs For Mean Based on Pooled StDev Level N Mean StDev ------+---------+---------+---------+ 15 5 9.800 3.347 (-----*----) 20 5 15.400 3.130 (----*----) 25 5 17.600 2.074 (----*----) 30 5 21.600 2.608 (----*----) 35 5 10.800 2.864 (-----*----) ------+---------+---------+---------+ Pooled StDev = 2.839 10.0 15.0 20.0 25.0 c) The normal probability plot and the residual plots show that the model assumptions are reasonable. 13-1 20 15 10 6 5 4 3 2 1-1-2-3-4 Fited Value Residual Residuals Versus the Fitted Values (response is STRENGTH) 2 1-1-2 6 5 4 3 2 1-1-2-3-4 Normal Score Residual Normal Probability Plot of the Residuals (response is STRENGTH) 35 25 15 6 5 4 3 2 1-1-2-3-4 COTTON Residual Residuals Versus COTTON (response is STRENGTH) 13-2 a) Analysis of Variance for FLOW Source DF SS MS F P FLOW 2 3.6478 1.8239 3.59 0.053 Error 15 7.6300 0.5087 Total 17 11.2778 Do not reject H . There is no evidence that flow rate affects etch uniformity. 200 160 125 5 4 3 FLOW UNIFORMIT b) Residuals are acceptable. -1 1-2-1 1 2 Normal Score Residual Normal Probability Plot of the Residuals (response is obs) 13-2 200 190 180 170 160 150 140 130 120 1-1 FLOW Residual Residuals Versus FLOW (response is UNIFORMI) 4.5 4.0 3.5 1-1 Fitted Value Residual Residuals Versus the Fitted Values (response is UNIFORMI) 13-3. a) Analysis of Variance for STRENGTH Source DF SS MS F P TECHNIQU 3 489740 163247 12.73 0.000 Error 12 153908 12826 Total 15 643648 Reject H . Techniques affect the mean strength of the concrete. b) P-value 0 c) Residuals are acceptable 4 3 2 1 200 100-100-200 TECHNIQU Residual Residuals Versus TECHNIQU (response is STRENGTH) 3150 3050 2950 2850 2750 2650 200 100-100-200 Fitted Value Residual Residuals Versus the Fitted Values (response is STRENGTH)-200-100 100 200-2-1 1 2 Normal Score Residual Normal Probability Plot of the Residuals (response is STRENGTH) 13-3 13-4 a) Analysis of Variance for CIRCUIT TYPE Source DF SS MS F P CIRCUITT 2 260.9 130.5 4.01 0.046 Error 12 390.8 32.6 Total 14 651.7 Reject H b)There is some indication of greater variability in circuit two. There is some curvature in the normal probability plot. -10 10-2-1 1 2 Normal Score Residual Normal Probability Plot of the Residuals (response is time) 3 2 1 10-10 CIRCUITT Residual Residuals Versus CIRCUITT (response is RESPONSE) 28 23 18 10-10 Fited Value Residual Residuals Versus the Fitted Values (response is RESPONSE) c) 95% Confidence interval on the mean of circuit type 3....
View Full Document

This note was uploaded on 10/12/2009 for the course IND E 315 taught by Professor Kailashkapur during the Spring '09 term at University of Washington.

Page1 / 19

mont4e_sm_ch13_sec02 - CHAPTER 13 Section 13-2 13-1. a)...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online