HW Solutions Ch 11 and 12

HW Solutions Ch 11 and 12 - HW Solutions Ch 11 11.9 Results...

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HW Solutions – Ch 11 11.9 Results for: Data One-way ANOVA: Main, Satellite 1, Satellite 2, Satellite 3 Source DF SS MS F P Factor 3 6312 2104 6.37 0.001 Error 56 18493 330 Total 59 24806 S = 18.17 R-Sq = 25.45% R-Sq(adj) = 21.45% Individual 95% CIs For Mean Based on Pooled StDev Level N Mean StDev ---+---------+---------+---------+------ Main 15 69.84 18.20 (-------*-------) Satellite 1 15 41.25 19.39 (------*-------) Satellite 2 15 56.56 14.33 (-------*-------) Satellite 3 15 51.97 20.21 (-------*-------) ---+---------+---------+---------+------ 36 48 60 72 Pooled StDev = 18.17 Tukey 95% Simultaneous Confidence Intervals All Pairwise Comparisons Individual confidence level = 98.94% Main subtracted from: Lower Center Upper ---+---------+---------+---------+------ Satellite 1 -46.14 -28.59 -11.04 (--------*-------) Satellite 2 -30.83 -13.28 4.27 (-------*--------) Satellite 3 -35.42 -17.87 -0.32 (--------*--------) ---+---------+---------+---------+------ -40 -20 0 20 Satellite 1 subtracted from: Lower Center Upper ---+---------+---------+---------+------ Satellite 2 -2.24 15.31 32.86 (--------*-------) Satellite 3 -6.83 10.72 28.27 (-------*--------) ---+---------+---------+---------+------ -40 -20 0 20 Satellite 2 subtracted from: Lower Center Upper ---+---------+---------+---------+------ Satellite 3 -22.14 -4.59 12.96 (--------*-------) ---+---------+---------+---------+------ -40 -20 0 20
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a. Since F u = about 2.8 < F stat = 6.37, there is evidence that at least one pair of mean waiting times is different. b. From the Tukey-Kramer output, Satellites 1 and 3 have a lower mean waiting time than the Main emergency room. 11.11 One-way ANOVA: Money Market, Six Month CD, One-Year CD, 2.5 Year CD, ...
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