MATH 534 APPLIED MANAGERIAL STATISTICS (MATH534)

If the occurrence or non occurrence of one event does not affect the occurrence or non occurrence of another event ,the two event sare In any statistical experiment if the occurrence of one event precludesthe occurrence of the other events, the events of the experiment arecalled . In the experiment of a single roll of a 6-faced die, if the outcome “3showsup”iscalledeventAandtheoutcome“4showsup”iscalledeventB,thenAandBare . Fifty percent of all technical assistants would like to have...

1. Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is th 2. Scores on a certain exam are normally distributed with a mean of 90 and a variance of 25. What is th 3. Which one of the following is not a characteristic of a normal distribution? X is normally distributed with mean 50 and standard deviation 4, what is P(45 < X < 58) ? 7. Suppose X is normally distributed with mean 20 and standard deviation 4, find the value x0 such that 9. I...

Fifty percent of all technical assistants would like to have a PC. Eightypercent of all technical assistants would like to have MAC. Forty-fivepercentofalltechnicalassistantswouldliketohaveboth.Ifatechnicalassistant is randomly selected, what is the probability that she wouldliketohaveMAC,giventhatshewouldliketohaveaPCaswell? Theprobabilityofoneeventgiventheinformationthatanotherrelatedeventhasoccurredisanexampleof . Iftwoevents,EventAwithprobabilityP(A)andEventBwithprobabilityP(B)areindep...

1. Supposearandomsampleof400isselectedfromapopulationwithastandarddeviationof5.Ifthesamplemeanis25,the98%confidenceintervaltoestimate thepopulationmean is between 2. Thepointestimateofthepopulationmeanis 3. Supposearandomsampleof50isdrawnfromapopulationwhosestandarddeviationisunknown.Ifthesamplemeanis70andthesamplestandarddeviationis5,the92%confidenceintervaltoestimatethepopulationmeanisbetween . 4. Supposearesearcherisinterestedinunderstandingthevariationinthe price of store brand milk. A ra...

Acompanywantstolearnthecustomers’purchasehabitsofbuyingcertainproducts.Thiscompanydidasurveyaboutarandom1000customers,whowereaskedaboutthetimestheypurchasedthecertain products within one month. Then what is the data in thisexample:

Week1:StudyandSampleDesign A company makes men's button-up dress shirts and is considering changes to its design. Howmight the company go about finding a good sample of individuals? These decisions wouldincludemethodofsampling,locationofsampling,populationtoconsider,andnumberinsample,in additionto any other considerations.

ThisisProjectPartB:HypothesisTestingandConfidenceIntervals.Inthispartofproject,wewill conduct Hypothesis Testing for a few of variables and data set. Confidence Intervals willalso befound for thosevariables. 2. Compute99%confidenceintervalsforTrainingTypeusedinhypothesistestandinterpret theseintervals.

MATH534WEEK1HOMEWORK Supposeyouareanoperationsmanagerforaplantthatmanufacturesbatteries.Giveanexampleofhowyoucouldusedescriptivestatisticsto make better managerial decisions. Give an example of how youcoulduseinferentialstatisticsto makebetter managerialdecisions.

2. Scoresonacertainexamarenormallydistributedwithameanof90andavarianceof25.99.8 7. AccordingtoanNRFsurveyconductedbyBIGresearch,theaveragefamilyspendsabout $23 8. AccordingtotheAirTransportAssociationofAmerica,theaverageoperatingcostofanMD 10. Selectionofthesamplesbasedontheconvenienceoftheresearcherisanexampleof non random sampling 14. TheAluminumAssociationreportsthattheaverageAmericanuses56.8poundsofalumin 16. Ifreasonablylargesizedsamples(i.e.,samplesof30elementsormore)aredrawnfroma ...

1. Arandomsampleof100selectedfromapopulationwithastandarddeviation of 10 yielded a mean = 225. The mean and the standarddeviationofthedistributionofthesamplemeansare . 2. Suppose a random sample of 49 is selected from a population ofsize N = 500 with a standard deviation of 14. If the sample mean is125,the99%confidenceintervaltoestimatethepopulationmeanisbetween . 3. A manufacturer wants to purchase a certain product of foil. The foilisstoredon1534rollseachcontainingavaryingamountoffoilwithast...