MATH 534 Week 5 Homework Problems Version 1 Keller Devry University

1. In hypothesis testing the statistical conclusion is either to reject ornottorejectthenullhypothesisbasedonthesampledata.Whichofthefollowingstatementsistrue? 2. Ifacompanywantstoprovethattheproportion(p)ofitsrevenuesfromoverseasoperationsismorethan18%,thenullandalternatehypothesesare . 3. Atestofthehypotheses,H0:p=0.18andH1:p>0.18isa 4. Thedeanofabusinessschoolclaimsthattheaveragestartingsalaryofitsgraduatesismorethan85(in$000’s).It isknownthatthepopulationstandarddeviationis10(in$000’s).Sampledataonthestartingsalariesof64randomlyselectedrecentgraduatesyieldeda 5. Thedeanofabusinessschoolclaimsthattheaveragestartingsalaryofitsgraduatesismorethan85 (in$000’s).Itisknownthatthepopulationstandarddeviationis10(in$000’s).Sampledataonthestartingsalariesof64randomlyselectedrecentgraduatesyieldedameanof88(in$000s).Whatisthep-valueforthehypothesistesttocheckoutthedean’sclaim? 6. Theprobabilityofgettingateststatisticasextremeastheobservedteststatisticcomputedfromthesampledataundertheassumptionthatthenullhypothesisistrueiscalledthe .