Basic Math question and answers for August 23, 2023
- Q You may need to use the appropriate technology to answer thisquestion.A Deloitte employment survey asked a sample of human resourceexecutives how their company planned to change its workforce overthe next...
- Q Assume that 15% of circuit boards used in manufacturing compactdisplayers are defective. Off a batch of 200 randomly selected suchcircuit boards, use the normal approximation with the continuitycorrection to find...
- Q Confidence Intervals for MeansComplete each of the following calculations by providing thecorrect formula and values that you are using for eachproblem.1) A sample size of n = 120 produced the...
- Q A deck consists of 72 cards with 9 suits labelled ? to ? andnumbered ranks from 1 to 8. That is, there are 8 cards of each suitand 9 cards...
- Q Explain why theresults of a presidential election poll can sometimes lead to aninaccurate conclusion about who will win the election. Hint:Chapter 6 should help you understand this.
- Q Please provide several examples of a negativecorrelation coefficient.
- Q Use the following scenario and data to answer questions12.1 – 12.5. A researcher is interested in how many daysit takes athletes to recover from jet lag when they have had...
- Q write 200 words on your thoughtsQuantitative analysis is described as a scientific oroperations research approach in the decision making process whereboth quantitative and qualitative aspects must be measured (Renderet al.,...
- Q What are ways to decrease sampling error?
- Q Edwards Manufacturing Company purchases two component parts fromthree different suppliers. The suppliers have limited capacity, andno one supplier can meet all the company’s needs. In addition, thesuppliers charge different prices...
- Q Helena Lorimer runs a set of ice cream cafes that sell mainlythree flavors of ice cream: vanilla, chocolate, and strawberry. Hotweather and high demand have caused her to run short...
- Q Although bats are not known for their eyesight, they are able tolocate prey (mainly insects) by emitting high-pitched sounds andlistening for echoes. A paper gave the following distances (incentimeters) at...
- Q In 1997 a woman sued a computer keyboard manufacturer, chargingthat her repetitive stress injuries were caused by the keyboard(Genessey v. Digital Equipment Corporation). The jury awarded about$3.5 million for pain...
- Q Consider a sample with data values of 27, 25, 20, 15, 30, 34, 28,and 25. compute the rangw, interquartile range, variance, andstandard deviation.
- Q Zhaoxin needs to successfully complete a coding project thatinvolves complex natural language processing algorithms. Zhaoxinmust choose between three different Application ProgrammingInterfaces (API), but is unsure which API is best for...
- Q You have a portfolio with two bonds worth $100 each. Each bondhas a 4% probability of defaulting. If the bond defaults it isworth $0. If it does not default it...
- Q The proportion of people in a given community who have a certaindisease is 0.01. A test is available to diagnose the disease. If aperson has the disease, the probability that...
- Q How much time does an algorithm take to solve a problem of sizen if this algorithm uses 2n2 + 2n operations, each requiring 10-8seconds, with these values of n?a) 10:b)...
- Q Descriptive Statistics and GraphicalDisplaysValencia Orange Price ComparisonYou have been hired as a consultant to determine who ABC GroceryStore should be ordering Valencia Oranges from.To: StatisticianFrom: ABC Grocery StorePlease advise us...
- Q The personnel office at a large electronics firm regularlyschedules job interviews and maintains records of the interviews.From the past records, they have found that the length of a firstinterview is...
- Q A sample of 44 observations is selected from a normalpopulation. The sample mean is 24, and the population standarddeviation is 3. Conduct the following test of hypothesis using the0.05 significance...
- Q In a study of cell phone use and brain hemispheric​ dominance,an Internet survey was​ e-mailed to 2446 subjects randomly selectedfrom an online group involved with ears. 1083 surveys werereturned. Construct...
- Q Question 1 options:According to the February 2008 Federal Trade Commission reporton consumer fraud and identity theft, 23% of all complaints in 2007were for identity theft. In that year, Alaska had...
- Q Three experiments investigating the relation between need forcognitive closure and persuasion were performed. Part of the studyinvolved administering a \"need for closure scale\" to a group ofstudents enrolled in an...
- Q In each of the following cases, compute 95 percent, 98 percent,and 99 percent confidence intervals for the population proportionp.(a) pˆp^ = .6 and n = 100(Round your answers to 3...
- Q In an article in the Journal of Advertising, Weinbergerand Spotts compare the use of humor in television ads in the UnitedStates and the United Kingdom. They found that a substantiallygreater...
- Q Briefly explain specifically why categorical andquantitative variables require different methodsin order to describe their distributions.A correct answer will accurately address BOTH types of variablesand clearly explain the REASONS these two...
- Q street performer offers you a chance to play his game for thelow price of $10.His game involves you pushing two different buttons. One of thebuttons, when pushed, has a 10%...
- Q In Texas Hold’em, each player is dealt two cards from the deck.Obviously, this is done without replacement, so you cannot use thebinomial distribution. You can use the hypergeometric distributionor reason...
- Q Please answer the following questions based on the analysis inexcel.1. Calculate the mean, standard deviation, and variance of thetwo samples. Embed the answers in the data sheet.2. Calculate the degrees...
- Q The risk of HIV:The risk of HIV runs high in North America. In the at-riskpopulation, about 1 in 30 people are HIV carriers, while in generalpopulation (people who are not...
- Q One genetic disease was tested positive in both parents of onefamily. It has been known that any child in this family has a 25%risk of inheriting this disease. A family...
- Q How would bias impact developing of accurate predictive models?How would you minimize the impact of bias?
- Q A financial planning firm has a decision to make. The companycan buy more stocks (B) now, not buy and not sell stock (N) now, orit can sell its stock (S)...
- Q An investor owns a portfolio consisting of two mutual funds, Aand B, with 50% invested in A. The following table lists the inputsfor these funds.MeasuresFund AFund BExpected value107Variance6843Covariance25a. Calculate the...
- Q A health psychologist tests a new intervention to determine ifit can change healthy behaviors among siblings. To conduct the thistest using a matched-pairs design, the researcher gives one siblingan intervention,...
- Q Answer All Questions:1. What is the difference between a population and a sampleinstatistics?(I need Unique answer) (i needmore details and more Explain)(use your ownwords don't copy and paste) (don't use...
- Q In an article in the Journal of Advertising, Weinbergerand Spotts compare the use of humor in television ads in the UnitedStates and in the United Kingdom. Suppose that independent randomsamples...
- Q For this Pause-Problem, I want you to design three (brief!)studies (they can all be variations on the same idea).***Make sure to note the independent and dependent variables forall1). One should...
- Q Hello,Would any one give me three survey questions that ConductHypothesis Tests for the following:Section I - Single Mean Compared to a Hypothesized valueSection II - Comparison of 2 MeansSection III...
- Q For this Assignment, you are working at a firm that conductsindependent testing for heavy industry. Recently, an automobilemanufacturer has been in the news for complaints about the highwaygas mileage of...
- Q Consider the trash bag problem. Suppose that an independentlaboratory has tested trash bags and has found that no 30-gallonbags that are currently on the market have a mean breaking strengthof...
- Q Individuals filing federal income tax returns prior to March 31received an average refund of $1077. Consider the population of\"last-minute\" filers who mail their tax return during the last fivedays of...
- Q 1. An engineering firm conducts traffic studies on behalf ofcompanies that want to build a new store in Miami, Florida. Theaverage cost of these traffic studies is $15,500, and the...
- Q determine what level of measurements (interval/ratio, nominal,ordinal) the following demographics are measured:Number of children in a household, race, salary $75 k- 100 k,ethnicity, political party,ideology, level of education (bylevel),marital status,...
- Q The New England Cheese Company produces two cheese spreads byblending mild cheddar cheese with extra sharp cheddar cheese. Thecheese spreads are packaged in 12-ounce containers, which are thensold to distributors...
- Q Problem 4-03 (Algorithmic)The employee credit union at State University is planning theallocation of funds for the coming year. The credit union makesfour types of loans to its members. In addition,...
- Q suppose that youencounter two traffic lights on your commute to school. Based onpast experience, you judge that the probability is .60 that thefirst light will be red when you get...
- Q Problem 7-9 Dixie Showtime Movie Theaters, Inc., owns andoperates a chain of cinemas in several markets in the southern U.S.The owners would like to estimate weekly gross revenue as afunction...
- Q Problem 1. The purpose of this problem is to practice the use oflogic operations and quantifiers. For each Statement X belowdetermine if each of the three statementsX1, X2, X3 that...
- Q Western Family Steakhouse offers a variety of low-cost meals andquick service. Other than management, the steakhouse operates withtwo full-time employees who work 8 hours per day. The rest of theemployees...
- Q Using these 5 core concepts on reinterpreting correlations,please explain all 5 of them.reciprocal causationcausal variableextraneous variablemediating variablemoderating variable
- Q Consider a simple linear regression model with nonstochasticregressor: Yi = β1 + β2Xi + ui . 1. [3 points] What are theassumptions of this model so that the OLS estimators...
- Q assume that random guesses aremade for eight multiple choice questions on a SAT test so thatthere are n=8 trials, each with probability of success (correct)given by p=0.20a) prob of number...
- Q The​ quality-control manager at a compact fluorescent lightbulb​ (CFL) factory needs to determine whether the mean life of alarge shipment of CFLs is equal to 7,487 hours. The populationstandard deviation...
- Q The shape of the distribution of the time required to get an oilchange at a 15​-minute oil-change facility is unknown.​ However,records indicate that the mean time is 16.4 minutes and...
- Q The USDepartment of Transportation (DOT) is tasked with maintaining thenation's 615,322 bridges. The US DOT believes the percentage ofstructurally deficient bridges is below 10%. A private civilengineering group found 11.9%...
- Q In an article in the Journal of Advertising, Weinberger andSpotts compare the use of humor in television ads in the UnitedStates and the United Kingdom. They found that a substantiallygreater...
- Q The table below gives the age and bone density for five randomlyselected women. Using this data, consider the equation of theregression line, yˆ=b0+b1x, for predicting a woman's bone densitybased on...
- Q Recall that \"very satisfied\" customers give the XYZ-Box videogame system a rating that is at least 42. Suppose that themanufacturer of the XYZ-Box wishes to use the random sample of...
- Q Porphyrin is a pigment in blood protoplasm and other body fluidsthat is significant in body energy and storage. Let x be arandom variable that represents the number of milligrams ofporphyrin...
- Q Show that the skewness of X~Poisson(λ) is λ^-(1/2)
- Q Assume that a driver faces the following loss distribution:Loss 10,000 0Probability .04 .96These two drivers decide to pool their losses with two otherdrivers with the same loss distribution, and all...
- Q In the EAI sampling problem, the population mean is $51,800 andthe population standard deviation is $4,000. When the sample sizeis n = 20, there is a 0.4246 probability of obtaining...
- Q Almost all U.S. light-rail systems use electric cars that run ontracks built at street level. The Federal Transit Administrationclaims light-rail is one of the safest modes of travel, with anaccident...
- Q The employee credit union at State University is planning theallocation of funds for the coming year. The credit union makesfour types of loans to its members. In addition, the credit...
- Q A factor in determining the usefulness of an examination as ameasure of demonstrated ability is the amount of spread that occursin the grades. If the spread or variation of examination...
- Q 2. Alice and 10 other users are sending packets using the pureALOHA protocol. The duration of a packet is 40 msec. Each usersends a packet (including both originals and retransmissions)following...
- Q Your leader wants you to evaluate the difference in cycle timebetween three different offices. Describe the steps you would takein the evaluation in order to provide a report so the...
- Q 5. (Casella & Berger, 2nd ed.) A p.d.f. is defined by f(x,y) = C(x + 2y) for 0 < y < 1 and 0 < x < 2, and is...
- Q Because some people are unable to stand to have their heightmeasured, doctors use the height from the floor to the knee toapproximate their patients’ height (in cm).Height of KneeOverall Height571924715343146441605517154176a....
- Q A standardized test consists of 100 multiple-choice questions.Each question has five possible answers, only one of which iscorrect. Four points are awarded for each correct answer. Todiscourage guessing, one point...
- Q Case Study: Project Communications Management: Best Practices inPractice As part of a large IT systems integration project for theState of California, I witnessed the Project Management Office(PMO) do an excellent...
- Q A researcher is interested to learn if there is a linearrelationship between the hours in a week spent exercising and aperson’s life satisfaction. The researchers collected the followingdata from a...
- Q How does the likelihood function change for Random Vectors vsRandom Variables?Say: If you have Random Variables A1...An with a normaldistribution, with mean mu_A and Variance and another RandomVariable, B1...Bn, with...
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