Basic Math question and answers for September 26, 2023
- Q Wait-Times (Raw Data, Software Required):There are three registers at the local grocery store. I suspect themean wait-times for the registers are different. The sample data isdepicted below. It gives the...
- Q Answer the questions and interpret the data.Colleen is the marketing manager for Virtually Viral, anentertainment company that collects viral videos from around theInternet and aggregates them on their website. Whether...
- Q The judges of County X try thousands of cases per year. Althoughin a big majority of the cases disposed the verdict stands asrendered, some cases are appealed. Of those appealed,...
- Q Please walk me through SPSS setup for this and complete thefollowing, NOT just answer it, but show me how you did it onSPSSConsider the data below of inches of rainfall...
- Q The null and alternate hypotheses are: H0: ?1 ??2H1: ?1 >?2A random sample of 26 items from the first population showed amean of 114 and a standard deviation of 9. A...
- Q Directions: Show ALL work! Please round any answer to thenearest hundredth, unless you can get an exact amount. If an answerasks to explain, please make sure to give a valid...
- Q Do male and female students study the same amount per week? In2007, 58 sophomore business students were surveyed at a largeuniversity that has more than 1,000 sophomore business studentseach year....
- Q A student at a university has been doing a project toinvestigate entertainment habits of students. They have surveyed100 random students who were each asked three questions:Have you watched a movie...
- Q 1. Weakly earnings on a certain import venture are approximatelynormally distributed with a known mean of $487 and unknown standarddeviation. If the proportion of earnings over $517 is 27%, find...
- Q Problem 8: The Framingham Heart Study was a longitudinal cohortstudy of 5000+ men and women. One outcome of interest was fastingglucose levels. Glucose levels were categorized into threedifferent categories:Glucose Levels -Diabetes...
- Q which statistical analysis to use for a survey of 5 questionswith four choices each strongly positive, positive, neutral andnegative
- Q How does confidence intervals confirm hypothesis testingresults. Provide an example
- Q You work for a lobby group that is trying to convince thegovernment to pass a new law. Before embarking on this, your lobbygroup would like to know as much as...
- Q Use the applet "Sample Size and Interval Width when EstimatingProportions" to answer the following questions.This applet illustrates how sample size is related to the widthof a 95% confidence interval estimate...
- Q When selecting a sample, there are several methods of selectionavailable.A company with hundreds of employees has hired a third partyhuman resources agency. The agency is to study the employees andtheir...
- Q One of the questions Rasmussen Reports included on a 2018 surveyof 2,500 likely voters asked if the country is headed in rightdirection. Representative data are shown in the DATAfile namedRightDirection....
- Q Use R studio to do this problem. This problem uses the wblakedata set in the alr4 package. This data set includes samples ofsmall mouth bass collected in West Bearskin Lake,...
- Q Problem 9-13 (Algorithmic)Romans Food Market, located in Saratoga, New York, carries avariety of specialty foods from around the world. Two of thestore’s leading products use the Romans Food Market name:...
- Q 7.) The average cholesterol content of MightyTaco’s Super Mighty Burrito is 95 mg with a standard deviation of7.2. Assume the variable is normally distributed.(a) If a single Super...
- Q 3) In the data from the first problem, one of the scores of awinning team was 131 points. Use what you learned in CH. 3-2, plusthe calculated mean and standard...
- Q A study was performed comparing the efficacy of a new painreliever, Galproxidone, to several pain relievers commonlyprescribed after orthopedic surgury. Patients were asked to ratetheir pain after taking each medication....
- Q Suppose the mean income of firms in the industry for a year is55 million dollars with a standard deviation of 3 million dollars.If incomes for the industry are distributed normally,...
- Q (Data below) (to be done with EVIEWS or any data processor)Millions of investors buy mutual funds, choosing from thousandsof possibilities. Some funds can be purchased directly from banksor other financial...
- Q If nequals=100 and Xequals=35?, construct a 95?% confidenceinterval estimate of the population proportion.
- Q 3. A clinical trial examined the effectiveness of aspirin in thetreatment of cerebral ischemia(stroke). Patients were randomizedinto treatment and control groups. The study wasdouble-blind. Aftersix months of treatment, the attending...
- Q Develop a simulation model for a three-year financial analysisof total profit based on the following data and information. Salesvolume in the first year is estimated to be 100,000 units and...
- Q Suppose we have the following annual sales data for anautomobile dealership:YearSalesTrend200912112010187220111653201213442013155520141676201520072016206820172219201823110We want to forecast sales for 2019 and 2020 using either asimple trend model or a quadratic trend model. Use...
- Q Customers using a self-service soda dispenser take an average of12 ounces of soda with an SD of 4 ounces. Assume that the amountwould be normally distributed.What is the probability that...
- Q Find a point on a given line such that if it is joined to twogiven points on opposite sides of the line, then the angle formedby the connecting segment is...
- Q 5. Four different paints are advertised to have the same dryingtimes. To verify the manufacturer’s claim, seven samples weretested for each of the paints. The time in minutes until the...
- Q Data from 1991 General Social Survey classify a sample ofAmericans according to their gender and their opinion aboutafterlife (example from A. Agresti, 1996, “Introduction tocategorical data analysis”). The opinions about...
- Q Could you please explain to me when I should use the twoproportion tests?A two proportion f test tests variance/standard deviation. So ifit is testing how much the two proportions vary...
- Q Are very young infants more likely to imitate actions that aremodeled by a person or simulated by an object? This question wasthe basis of a research study. One action examined...
- Q Many different manufacturers sell residential gas ranges. Thecost in dollars of four gas ranges is given below.529 664 709 8001. suppose a random sample of size two is selected from...
- Q For the following, Use the five-step approach to hypothesistesting found on page 8-16. It states. You can use excel to computethe data or you can do it by hand. The...
- Q In a study of 1910 schoolchildren in Australia, 1050 childrenindicated that they normally watch TV before school in the morning.(Interestingly, only 35% of the parents said their children watchedTV before...
- Q Below are results from a regression analysis. The dependentvariable is the percent vote for Woodrow Wilson in 1916, measuredfrom 0 to 100. Each observation is a New Jersey county, of...
- Q Please note that for all problems in this course, thestandard cut-off (alpha) for a test of significance will be .05,and you always report the exact power unless SPSS output statesp=.000...
- Q 1. A company produces electric motors for usein home appliances. One of the company’s production managers isinterested in examining the relationship between the dollars spentper month in inspecting finished motor...
- Q Assignment #3: Inferential Statistics Analysis andWriteupPart A: Inferential Statistics Data Analysis Plan andComputationIntroduction: I chose to imagine I am a 36 yearold married individual with a large family. (UniqueID#30)Variables Selected:Table...
- Q HOUSEIDTRAVDAYSAMPSTRATHOMEOWNHHSIZEHHVEHCNTHHFAMINCPCSPHONETABWALKBIKECARTAXIBUSTRAINPARAPRICEPLACEWALK2SAVEBIKE2SAVEPTRANSHHRELATDDRVRCNTCNTTDHHHHSTATEHHSTFIPSNUMADLTYOUNGCHILDWRKCOUNTTDAYDATEHHRESPLIF_CYCMSACATMSASIZERAILURBANURBANSIZEURBRURSCRESPCENSUS_DCENSUS_RCDIVMSARHH_RACEHH_HISPHH_CBSARESP_CNTWEBUSE17SMPLSRCEWTHHFINHBHURHTHTNRNTHTPPOPDNHTRESDNHTEEMPDNHBHTNRNTHBPPOPDNHBRESDN30000007231357212551545512444136NC373012016081103121111535322XXXXX312187.3143T5015007507502075030030000008521248112441555552445122WI552022016082225246213232123346021269.51303R53003001505300300300000125311210113251544521235219NY36101201607113321311212312XXXXX11279.41959C80170001700050006017000700030000019531223155251555523233124MD24200201605123221111535312XXXXX212279.1436S403003001505075030030000029331225251-9-91-9-9-9-9325551210WI552002016101103321211323312XXXXX212103.2403S4015007507504015007503000003953122101355515555535551211PA42201201609123321311212312XXXXX2112329.525S40700015001500530001500300000414312211111141344555555126CA6202201606123311211949312XXXXX212788.6142T40300502540300300300000625412610111451455533455126TX482012016091104624621737412XXXXX212294.5018R205050255505030000082332428115-9515555335551212NY36222201605143321311212312XXXXX4121148.809T2015003007503075030030000085121129114142355553443216CA6101201608112521411949297141740112190.669U501700017000500050300001700030000089631427214551555553555124TX48222201612143324621737311XXXXX412833.6213T20150075075030150030030000094332114115441455522223214CA6101201610113121111949311XXXXX112163.3823T203003001502030030030000095631116255421555543335219WI55100201607193321211323312XXXXX12241.93445S5700030003000570003000300001076212381254415545344451211TX482002016121225214117372121910021260.00456C5700015003000207000150030000128132221115351554544444222ME23200201605123121111111312XXXXX2117092.269C303003001506030001500PROBLEM 1: Estimate the average number of trip generated byhouseholds in the study area by (a) Number of workers in thehousehold (b) Number of students in the household (c) Number...
- Q Suppose there are n independent Gaussian r.v.s, X j ? N ( ? j ,? 2 j ) for j = 1 , 2 , . . . , n...
- Q You are considering testing a new drug that is supposed tofacilitate learning in mentally retarded children. Based onpreliminary research, you have some idea about the size of thedrug's effect. Because...
- Q Ithas been long stated that the mean temperature of humans is 98.6degrees Faranheit. However, two researchers currently involved inthe subject though that the mean temperature of humans is less than98.6...
- Q Tomato weights and Fertilizer: Carl the farmerhas three fields of tomatoes, on one he used no fertilizer, inanother he used organic fertilizer, and the third he used achemical fertilizer. He...
- Q Given two independent random samples with the following results:n1=18x?1=141s1=13???n2=12x?2=161s2=12Use this data to find the 98% confidence interval for the truedifference between the population means. Assume that the populationvariances are not...
- Q Differentiate between correlation and causality. Give an exampleto illustrate the difference.
- Q Why is the question of privacy worth revisiting in the era ofBig Data? In particular identify at least three aspects that havechanged over the last 10 years
- Q Question 6: Analytics ConceptsWhat is a “model” in terms of predictive data analysis?Give an example.How will you explain the concept of hypothesis testingto a layperson?What is the difference between Mean...
- Q Suppose babies born after a gestation period of 32 to 35 weekshave a mean weight of 2800 grams and a standard deviation of 800grams while babies born after a gestation...
- Q A market research firm conducts telephone surveys with a 43%historical response rate.a. What is the probability that in a new sampleof 400 telephone numbers, at least 160 individuals will cooperateand...
- Q Is the difference between the mean annual salaries ofstatisticians in Region 1 and Region 2 more than $8000? To? decide,you select a random sample of statisticians from each region. Theresults...
- Q A study reports that 36% of companies in a Country A have threeor more female board directors. Suppose you select a random sampleof 100 respondents.What is the probability that the...
- Q A game show has three doors for a contestant to choosefrom. Behind one of the doors is a brand new car, and behind theother two doors are a goat. The...
- Q Use EXCEL and formulasLinear program problem whose output follows determines how manynecklaces, bracelets, rings, and earrings a jewelry store shouldstock. The objective function measures profit; it is assumed thatevery piece...
- Q A television station wishes to study the relationship betweenviewership of its 11 p.m. news program and viewer age (18 years orless, 19 to 35, 36 to 54, 55 or older)....
- Q A sports reporter for a local newspaper is working on a storyabout small college basketball players. A reporter for a majorsports magazine found that large college basketball players score25 points...
- Q Use this table to answer the following questions.# of siblings0-23-56 or moreTotalBroncos Fan9101736Not a Broncos Fan26311Total11162047a) If a random a person was selected, what would be theprobability that the person...
- Q Question 1The expected values are what we have from ______________.a. datab. samplingc. theory???????d. experimentsQuestion 2What is the relationship between the mean and the standarddeviation of the chi-square distribution?a. The standard...
- Q Please walk me through SPSS setup for this and complete thefollowing:Consider the data below of inches of rainfall per month forthree different regions in the Northwestern United States: Pleaseuse SPSS...
- Q Below is a list of the top nine longest serving U.S. SupremeCourt Justices, along with the current Chief Justice ofthe court:Name Length of Service (in years)William O.Douglas 36Stephen JohnsonField 34John PaulStevens 34JohnMarshall 34HugoBlack 34John MarshallHarlan ...
- Q Please walk me through SPSS to answer this question...Consider the data below of inches of rainfall per month for twodifferent regions in the Northwestern United States:Plains MountainsApril 25.2 13.0May 17.1...
- Q 1) Proponents of the latest Vermont gambling ballot initiativehave conducted a poll to determine whether their initiative islikely to pass? A random sample of 395 likely voters is selectedand 46%...
- Q A survey commissionedby the Southern Cross Healthcare Group reported that 15 % of NewZealanders consume five or more servings of soft drinks per week.The data were obtained by an online...
- Q A transportationmuseum has a building on both sides of Interstate 64/Highway 40. Awalkway across the highway connects the two parts of the museum. Atone of the exhibits, radar devices are...
- Q 1. A sample of retailers reported that they had the followingnumber of copies of statistics textbooks in inventory:57, 81, 69, 84, 85, 79, 71, 74,55.What is the mean number of...
- Q x: 1.5, 1, .25, .5y: 3.75, 2, 1, 1.751) what is the % variation in y explained by the regression2) test the null hypothesis that the slope =0 with thealternative...
- Q Please show your work, thank you!Which of the following are consequences of the Central LimitTheorem? I'm not sure why II and III are correct and the others arenot.I) A SRS...
- Q Assume that the differences are normally distributed. Completeparts ?(a) through ?(d) below. Observation 1 2 3 4 5 6 7 8 Upper XSubscript i 42.7 51.2 44.4 48.6 50.2 44.9...
- Q • What is the level of significance? • What are Type I and TypeII errors? • Interpreting and determining p-values • What is therelationship between sample size and power? •...
- Q The following table is protein concentration in three groups oftrypsin secretion.<=5051-1000>10001.71.42.922.43.822.44.42.23.34.744.4554.75.66.76.77.47.87.69.449.510.3Perform ANOVA test BY HAND to test if there is a significantdifference among these groups
- Q 7. The following data were collected in a clinical trial tocompare a new drug to a placebo for its effectiveness in loweringtotal serum cholesterol. New Drug (n=75) Placebo (n=75) TotalSample...
- Q *Please provide r studio code/file*1) Find the equation of the best fit line using leastsquareslinear fit of x,y:set.seed(88)x <- 1:100y <- jitter(1.5*x+8,amount=10)2) For question 1, Draw the P=0.95 prediction intervals...
- Q Please show your work - the answer is d) but I'm not sure why.Thank you!The time it takes to complete a Sta220 term test is normallydistributed with a meanof 100...
- Q 7% of Americans have an O negative blood type. A SRS of 400Americans are surveyed. Using normal approximation to the binomial,what is the approximate probability that at least 34 of...
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