Lab 5 - 1 2 3 4 5 6 Tests that the Variances are Equal 0.0...

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Question 2 Oneway Analysis of Illumination By Mixture t Test Mixture1-Mixture2 Assuming equal variances Difference -23.400 t Ratio -4.08831 Std Err Dif 5.724 DF 18 Upper CL Dif -11.375 Prob > |t| 0.0007 Lower CL Dif -35.425 Prob > t 0.9997 Confidence 0.95 Prob < t 0.0003 -20 -10 0 10 20 Std Error uses a pooled estimate of error variance Question 3 Oneway Analysis of Load Capacity By Alloy t Test Old-New Assuming unequal variances Difference -5.4800 t Ratio -6.21081 Std Err Dif 0.8823 DF 13.01813 Upper CL Dif -2.8228 Prob > |t| <.0001 Lower CL Dif -8.1372 Prob > t 1.0000 Confidence 0.99 Prob < t <.0001 -6 -5 -4 -3 -2 -1
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Unformatted text preview: 1 2 3 4 5 6 Tests that the Variances are Equal 0.0 0.5 1.0 1.5 2.0 2.5 Std Dev New Old Alloy Level Count Std Dev MeanAbsDif to Mean MeanAbsDif to Median New 10 2.510091 1.810000 1.810000 Old 10 1.218423 0.904000 0.890000 Test F Ratio DFNum DFDen p-Value O'Brien[.5] 2.1618 1 18 0.1587 Brown-Forsythe 2.5650 1 18 0.1267 Levene 2.5358 1 18 0.1287 Bartlett 4.1129 1 . 0.0426 F Test 2-sided 4.2441 9 9 0.0425 Welch Anova testing Means Equal, allowing Std Devs Not Equal F Ratio DFNum DFDen Prob &gt; F 38.5741 1 13.018 &lt;.0001 t Test 6.2108...
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This note was uploaded on 01/23/2010 for the course STAT 213 taught by Professor Hao during the Spring '10 term at Internet2.

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Lab 5 - 1 2 3 4 5 6 Tests that the Variances are Equal 0.0...

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