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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)ˉx=(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.thetrimmedmeanis1xˉtr20=(2.9+3.0+···+4.8)=3.678.91.2(a)Mean=20.768andMedian=20.610.(b)ˉxtr10=20.743.(c)Adotplotisshownbelow.18192021222312Chapter1IntroductiontoStatisticsandDataAnalysis1.3(a)Adotplotissh
6、ownbelow.200205210215220225230Inthe?gure,“×”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)XˉA=7.950andX?A=8.250;XˉB=10.260andX?B=10.150.(b)Adotplotisshownbelow.6.57.58.59.510.511.5Inthe?gure,“×”representscompanyAand“?”representscompanyB.ThesteelrodsmadebycompanyBshowmore?exibility.1.5(a)Adotplotisshownbelow.?10010203
8、040Inthe?gure,“×”representsthecontrolgroupand“?”representsthetreatmentgroup.(b)XˉControl=5.60,X?Control=5.00,andXˉtr(10);Con
