Probablity & Statistics for Engineers & Scientists Soln 9th Ed

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1、INSTRUCTOR’SSOLUTIONMANUALKEYINGYEANDSHARONMYERSforPROBABILITY&STATISTICSFORENGINEERS&SCIENTISTSEIGHTHEDITIONWALPOLE,MYERS,MYERS,YEContents1IntroductiontoStatisticsandDataAnalysis12Probability113RandomVariablesandProbabilityDistributions294MathematicalExpectation455So

2、meDiscreteProbabilityDistributions596SomeContinuousProbabilityDistributions717FunctionsofRandomVariables858FundamentalSamplingDistributionsandDataDescriptions919One-andTwo-SampleEstimationProblems10310One-andTwo-SampleTestsofHypotheses12111SimpleLinearRegressionandCor

3、relation14912MultipleLinearRegressionandCertainNonlinearRegressionModels17113One-FactorExperiments:General18514FactorialExperiments(TwoorMoreFactors)213152kFactorialExperimentsandFractions23716NonparametricStatistics257iiiivCONTENTS17StatisticalQualityControl27318Baye

4、sianStatistics277Chapter1IntroductiontoStatisticsandDataAnalysis1.1(a)15.1(b)¯x=(3.4+2.5+4.8+···+4.8)=3.787.15(c)Samplemedianisthe8thvalue,afterthedataissortedfromsmallesttolargest:3.6.(d)Adotplotisshownbelow.2.53.03.54.04.55.05.5(e)Aftertrimmingtotal40%ofthedata(20%h

5、ighestand20%lowest),thedatabecomes:2.93.03.33.43.63.74.04.44.8So.thetrimmedmeanis1x¯tr20=(2.9+3.0+···+4.8)=3.678.91.2(a)Mean=20.768andMedian=20.610.(b)¯xtr10=20.743.(c)Adotplotisshownbelow.18192021222312Chapter1IntroductiontoStatisticsandDataAnalysis1.3(a)Adotplotissh

6、ownbelow.200205210215220225230Inthefigure,“×”representsthe“Noaging”groupand“◦”representsthe“Aging”group.(b)Yes;tensilestrengthisgreatlyreducedduetotheagingprocess.(c)MeanAging=209.90,andMeanNoaging=222.10.(d)MedianAging=210.00,andMedianNoaging=221.50.Themeansandmedians

7、foreachgrouparesimilartoeachother.1.4(a)X¯A=7.950andX˜A=8.250;X¯B=10.260andX˜B=10.150.(b)Adotplotisshownbelow.6.57.58.59.510.511.5Inthefigure,“×”representscompanyAand“◦”representscompanyB.ThesteelrodsmadebycompanyBshowmoreflexibility.1.5(a)Adotplotisshownbelow.−10010203

8、040Inthefigure,“×”representsthecontrolgroupand“◦”representsthetreatmentgroup.(b)X¯Control=5.60,X˜Control=5.00,andX¯tr(10);Con