Basic Math question and answers for July 30, 2023
- Q Regression and CorrelationXYfreshmarine1474441394461604389943712040515143511539412140610944011941413044411046512745710049811545211741811250211647898500985898348085424884559843974423584111144848844777448864508649365495127470914547643044448425125041757466424961. What are the the values for "a" and "b"?2. Pearson's correlation Coefficient value r ?
- Q Forty professionalaeronautics students enrolled in a psychology course were asked howmany hours they had studied during the past weekend. Theirresponses are provided below.11201357181211789107461047867107311182973873139877For the data above, construct afrequency table and...
- Q The local library if they get more patrons visiting by shiftingsome early morning hours to evening. They take a sample of dayswith morning hours included (8-5) compared to 12-9. Data...
- Q Chapter 12:What two reasons do we use for the F-Statistic for?What is the critical F value for a hypothesistest with a sample from 5 populations with 20 observations total.Use a...
- Q A data table contains two variables. One is the 30-year fixedmortgage rate; it is measured as the best rate offered by amortgage broker over the last 90 days. The second...
- Q A fair coin is tossed until the first head occurs. Do thisexperiment T = 10; 100; 1,000; 10,000 times in R, and plot therelative frequencies of this occurring at the...
- Q 5. Two brands of coffee were compared. Two independent randomsamples of 50 people each were asked to taste either Brand A orBrand B coffee, and indicate whether they liked it...
- Q The probability is 0.3 that a traffic fatality involves anintoxicated or? alcohol-impaired driver or nonoccupant. In eighttraffic? fatalities, find the probability that the? number, Y,which involve an intoxicated or? alcohol-impaired...
- Q High daily temperatures and coffee sales (in hundreds ofdollars) were recorded at a local Starbucks for eight randomlyselected days. Results are listed in the table below. Is here acorrelation between...
- Q What are the percentages of scores that fall between:a) -1 and 0/0 and 1b) -1 and -2/1 and 2c) In the tails of a normal distribution.
- Q consider setting a goal with a longer term. You havedecided to save for your newborns college education and havedetermined that by the time the child reaches 18, you would likethem...
- Q In a consumer research study, several Meijer and Walmart storeswere surveyed at random and the average basket price was recordedfor each. You wish to determine if the average basket price...
- Q I believe that more patients are seen in a walk-in urgent carecenter leading up to lunch time, then slows down around lateafternoon and then increases again approaching closing time. Irecorded...
- Q Question:Test the mean of population X for equality to zero (mu=0)using the sample x and t-test at a significance level 0.05set.seed(88)x <- rt(150,df=2)
- Q Please answer form 6-14I. Consider the random experiment of rolling a pair of dice.Note: Write ALL probabilities as reduced fractions or whole numbers(no decimals).1) One possible outcome of this experiment...
- Q Forecast the advertising revenue for each quarter in 2011 usingseasonal dummy variables and a best subsets regression.? (Let thefirst dummy variable be equal to 1 for Quarter 2 and so?...
- Q The Consumer Reports Restaurant Customer SatisfactionSurvey is based upon 148,599 visits to full-service restaurantchains.† Assume the following data are representative of theresults reported. The variable type indicates whether therestaurant is...
- Q Question 15Please answer the following set of questions, based onthe information provided below.A service company is curious to know whether customer age iscrucial in deciding to subscribe. The company has...
- Q Question 12Please answer the following set of questions, based onthe information provided below.The data listed below give information for 10 middle-levelmanagers at a particular company. The first column is years...
- Q Below are data for the number of students in each of four agegroups that are enrolled in several local schools:Age GroupFranklin SchoolLowell Public SchoolJeanneD’arc SchoolInternational SchoolToddlers (1 – 4 yrs.)Pre-adolescents...
- Q The Rate of Return for firms on the stock market is about 8% onaverage(the mean) with a standard deviation of 6%.(A) What proportion of firms will earn a return between...
- Q The following table exhibits the age of antique furniture andthe corresponding prices. Use the table to answer the followingquestion(s). (Hint: Use scatter diagram and the Excel Trendlinetool where necessary).No. YearsValue($)7892591101083970159195013416102102770889601782010124135072888What...
- Q In a large clinical? trial, 395 comma 679 children were randomlyassigned to two groups. The treatment group consisted of 197 comma927 children given a vaccine for a certain? disease, and...
- Q Businesses know that customers often respond to backgroundmusic. Do they also respond to odors? One study of this questiontook place in a small pizza restaurant in France on two Saturdayevenings...
- Q Using the appropriate model, sample size n, and output below:Model: y = ?0 + ?1x1 + ?2x2 + ?3x3 + ? Sample size: n = 16Regression Statistics Multiple R .9979...
- Q yearPercentage200028200132200237200343200447200552200656200758200861200966Forecast the percentage of tax returns that will beelectronically filed for 2010 using exponential smoothing withtrend adjustment. Setalpha? =0.5 and ?=0.6
- Q A bottled water distributor wants to estimate the amount ofwater contained in 11?-gallon bottles purchased from a nationallyknown water bottling company. The water bottling? company'sspecifications state that the standard deviation...
- Q Truthfulness in online profiles. Many teens have posted profileson a social-networking website. A sample survey in 2007 asked a random sampleof teenswith online profiles if they included false information in...
- Q Jim Mead is a veterinarian who visits a Vermont farm to examineprize bulls. In order to examine a bull, Jim first gives the animala tranquilizer shot. The effect of the...
- Q 1. Enter into SPSS2. Name the variables and indicate the levels of measurement asnoted in the variable view screen.3. Run descriptive statistics on each of the variables - mean,median, mode,...
- Q A new thermostat has been engineered for the frozen food casesin large supermarkets. Both the old and new thermostats holdtemperatures at an average of 25°F. However, it is hoped that...
- Q Pauly’s Pizza claims that the mean time it takes for them todeliver a pizza to dorms at Nat’s college is 31 minutes. After along wait one night, Nat decides to...
- Q Critics of television often refer to the detrimental effectsthat all the violence shown on television has on children. However,there may be another problem. It may be that watching televisionalso reduces...
- Q In a? study, researchers wanted to measure the effect of alcoholon the hippocampal? region, the portion of the brain responsiblefor? long-term memory? storage, in adolescents. The researchersrandomly selected 22 adolescents...
- Q Approximately what percent of normally distributed data valueslie within 2 standard deviation to either side of the mean?
- Q The table below shows the number of cars sold last month byseven employees at Concord Motors and their number of years ofsales experience.ExperienceSales18262741459613810Management would like to use simple regression analysis...
- Q Pro-choice/Pro-life and Region of the Country:The results of a 2013 Gallup poll about people's position onabortion (pro-life or pro-choice) by region of the country aresummarized in the contingency table below.Observed...
- Q Salmon Weights: Assume that the weights ofspawning Chinook salmon in the Columbia river are normallydistributed. You randomly catch and weigh 17 such salmon. The meanweight from your sample is 22.2...
- Q The following table shows the Myers-Briggs personalitypreference and area of study for a random sample of 519 collegestudents. In the table, IN refers to introvert, intuitive; ENrefers to extrovert, intuitive;...
- Q The following table shows age distribution and location of arandom sample of 166 buffalo in a national park.AgeLamarDistrictNez PerceDistrictFireholeDistrictRowTotalCalf15131341Yearling1281333Adult31263592Column Total584761166Use a chi-square test to determine if age distribution andlocation are...
- Q A linguist is interested in knowing how best to learn a foreignlanguage. The linguist develops a new way to learn a foreignlanguage called Aural-Oral and wants to compare it to...
- Q (1) Suppose that the mean effect during a flight of ananti-stall mechanism in a plane is a height change of 0 meters witha standard deviation of 1 meter, and the...
- Q The state education commission wants to estimate the fraction oftenth grade students that have reading skills at or below theeighth grade level.Step 2 of 2 : Suppose a sample of 801...
- Q What does the sigma level capability mean for a process? Explainat least two reasons for the importance of achieving six-sigmacapability.
- Q What I have so far is bold.Question: The Mars company claims that 13 percent of M&M’splain candies distributed into bags are brown. Investigate thisclaim with an appropriate hypothesis test. Use...
- Q Hanna Properties, Inc. specializes in custom home resales inEquestrian Estates. A random sample of 8 currently listed homesprovided the following information on size of home and the price ofthe home....
- Q Consider the hypotheses below. Upper H 0?: mu greater than orequals 65 Upper H 1?: mu less than 65 Given that x overbar equals57.3?, s equals 9.7?, nequals25?, and alphaequals0.10?,...
- Q An increased number of colleges have been using online resourcesto research applicants. According to a study from last? year, 31?%of admissions officers indicated that they visited an applying?student's social networking...
- Q You have a bag of 10 marbles that has 6 blue ones and 4 redones.1.What is the probability of selecting one blue marble?
- Q To prepare for this Assignment, imagine that you haveinformation about how 20 nursing students and 20 psychologystudents felt about starting PSYC 3002 on Day 1 of this class. Youwant to...
- Q ExplainNull and Alternative HypothesesHypothesis Tests for Differences between Population MeansHypothesis Test for Equal Population VariancesHypothesis Tests for Differences between PopulationProportions
- Q In a recent study of enterprise resource planning? (ERP) system?effectiveness, researchers asked companies how they assessed thesuccess of their ERP systems. Out of 360 manufacturing companies?surveyed, they found that 201...
- Q A manufacturer of computer memory chips produces chips in lotsof 1000. If nothing has gone wrong in the manufacturing process, atmost 5 chips each lot would be defective, but if...
- Q Spray drift is a constant concern for pesticide applicators andagricultural producers. The inverse relationship between dropletsize and drift potential is well known. A researcher is interestedin the effects of herbicide...
- Q The Stanford-Binet IQ test is nationally normed with a mean of100 and a standard deviation of 15. A principal in an elementaryschool believes that her students have above-average intelligenceand wants...
- Q Office Equipment, Inc. (OEI) leases automatic mailing machinesto business customers in Fort Wayne, Indiana. The company built itssuccess on a reputation of providing timely maintenance and repairservice. Each OEI service...
- Q The percentage of hardwood concentration in raw pulp, the vatpressure, and the cooking time of the pulp are being investigatedfor their effects on the strength of paper. Three levels ofhardwood...
- Q Strassel Investors buys real estate, develops it, and resells itfor a profit. A new property is available, and Bud Strassel, thepresident and owner of Strassel Investors, believes if he purchasesand...
- Q The Super-warm Company produces two electric heaters (products Aand B) that require both heating elements and electricalcomponents. The owner currently determines how many units of eachproduct to be produced so...
- Q Explain an instance, or an aspect of data, that could lead aresearcher (or a viewer of a report) to misinterpret results as aresult of a study. Essentially, explain some errors...
- Q Find each Poisson probability, using a mean arrival rate of 10arrivals per hour. (a)Seven arrivals. (Round your answer to 4 decimalplaces.) Poisson probability (b)Three arrivals. (Round your answer to 4 decimalplaces.) Poisson probability (c)Fewer than...
- Q Find the value of the standard normal random variablezz , called z0z0 such that:(a)P(z?z0)=0.9999P(z?z0)=0.9999z0=z0=(b)P(?z0?z?z0)=0.922P(?z0?z?z0)=0.922z0=z0=(c)P(?z0?z?z0)=0.3954P(?z0?z?z0)=0.3954z0=z0=(d)P(z?z0)=0.4497P(z?z0)=0.4497z0=z0=(e)P(?z0?z?0)=0.3225P(?z0?z?0)=0.3225z0=z0=(f)P(?1.66?z?z0)=0.5474P(?1.66?z?z0)=0.5474z0=z0=
- Q Question 2: The Journal of the American Medical Associationreported in 2002 on a study of 1,100 airline passengers who flewfrom San Francisco to Denver. 515 of these passengers traveled onplanes...
- Q Using the information from above, with p?=0.714, q?=0.286, andn=140, what is the 90% confidence interval for the proportion ofthe population who use public transportation?z0.10z0.05z0.025z0.01z0.0051.2821.6451.9602.3262.576Use the table of common z-scores above.Round...
- Q ?c Jim Stallard 2019: Reproduction, in whole or in part,requires written consent of the copyright holder.4MINITAB output:Pearson correlation of MATScore and CalculusGrade = 0.840CoefficientsTerm Coef SD Coef...
- Q A researcher wishes to? estimate, with 95?% ?confidence, thepopulation proportion of adults who are confident with their?country's banking system. His estimate must be accurate within 5?%of the population proportion.?(a) No...
- Q 6. Listed below are actual high temperatures and the hightemperatures that were forecast five days earlier. Use a .05significance level to test the claim of a zero mean differencebetween the...
- Q Two Way ANOVA .A golfer has recently purchased new golf clubs, which hebelieves will significantly improve e his game. Below are thescores of three rounds of golf played at three...
- Q complete a between-subjects analysis of variance (ANOVA) by handfor the data:ANOVA data:A: 3, 1, 3, 4, 2B: 4, 5, 4, 8, 7C: 2, 3, 2, 4, 1thank you so much....
- Q An ANOVA procedure was performed on a data-set containinginformation on land values in five neighboring counties. Theanalysis indicated that at least one pair of land values wassignificantly different from each...
- Q Make a simulation to verify the following theorem: if X1 ? N(µ1,(? 1)^2 ), X2 ? N(µ2, (?2)^ 2 ), and X1 and X2 are independent,then X1 + X2 ?...
- Q In a recent survey, 456 out of 600 people surveyed think thatthe subject of calculus is difficult.1. What is the margin of error for a 90% confidence interval forthe percent...
- Q Using the data from your organization, identify an example wherethe quantitative process of “decision making under uncertainty”could assist with a decision.a) Define the states of nature andestimate probabilities for each...
- Q Data can be collectedand organized as an ordered pair (x, y). The data can be analyzedto determine the type and strength of a correlation and tocalculate a regression line in...
- Q Iam using the phbirths data in the faraway package in R.I want to:1) create a plot of the birth weight vs the gestational ageand I want to colour code the...
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