Basic Math question and answers for October 05, 2023
- Q I need the code in SAS and R and outputs please2. The data below come from a study investigating a method ofmeasuring body composition, and give the body fat percentage...
- Q Bad gums may mean a bad heart. Researchers discovered that 78%of people who have suffered a heart attack had periodontal disease,an inflammation of the gums. Only 29% of healthy people...
- Q 1. A telephone company claims that less than 15% of all collegestudents have their own cell phone plan. A random sample of 70students revealed that 8 of them had their...
- Q A coffee shop claims that its fresh-brewed drinks have a meancaffeine content of 80 milligrams per 5 ounces. A city healthagency believes that the coffee shop’s fresh- brewed drinks havehigher...
- Q Below,nis the sample size,pis the population proportion andpis the sample proportion. Use the Central Limit Theorem and theTI-84 calculator to find the probability. Round the answer to atleast four decimal...
- Q The mean cost of a meal for two in a midrange restaurant in CityA is $48. How do prices for comparable meals in Hong Kong compare?The file HongKongMeals contains the...
- Q You are considering the risk-return profile of two mutual fundsfor investment. The relatively risky fund promises an expectedreturn of 7.2% with a standard deviation of 15.7%. The relativelyless risky fund...
- Q An air transport association surveys business travelers todevelop quality ratings for transatlantic gateway airports. Themaximum possible rating is 10. Suppose a simple random sample of 50business travelers is selected and...
- Q A doctor would like to evaluate whether flu-frequency isdifferent among patients of various ages. He groups his most recent12 patients into four groups according to age (pediatric, youngadult, older adult,...
- Q The average score for male golfers is 87 and the average scorefor female golfers is 102. Use these values as the population meansfor men and women and assume that the...
- Q For a standard normal curve, find the z scores for thefollowing: the lower and upper z-scores for the middle .7994
- Q The HeadStart runs a day camp for 6- to 10- year olds during thesummer. Its manager is trying to reduce the center's operatingcosts to avoid having to raise the tuition...
- Q Nonparametric tests should not be used when ______.the associations being tested involve categorical variablesthe dependent variables are ordinal scalesthe assumptions of parametric tests are metthe population distribution is heavily skewedThe...
- Q A company that manufactures electronic components wants to knowthe mean discharge time of one particular type of capacitor that itmakes. In order to estimate this value, they randomly select 100capacitors...
- Q Plastic Microfiber Pollution on ShorelinesIn a study, we see that plastic microparticles are contaminatingthe world’s shorelines and that much of the pollution appears tocome from fibers from washing polyester clothes....
- Q A researcher conducts an experiment to compare the effectivenessof different therapies for depression. Participants diagnosed withdepression are randomly assigned to one of four groups: Control (notherapy provided), antidepressant medication (SSRI),cognitive-behavioral...
- Q Although union and non union wages tend to rise at the same ratein the long run, union wages usually advance faster duringrecessions and early in period of recovery, and non...
- Q The dataset gives the dried weight inpounds of three groups of 10 batches of plants, where each group of10 batches received a different treatment. The Weight variablegives the weight of...
- Q In which stages of the data investigation cycle would youconsider (a) level of measurement and (b) choice of researchdesign? Explain. (open-ended question)
- Q An engineering group needs to set up an assembly line to producea new product. The following table describes the relationshipsbetween the activities, their predecessors, and the estimatedactivity times (in weeks)...
- Q Suppose a company surveyed the work preferences and attitudes of1,006 working adults spread over three generations: baby boomers,Generation X, and millennials. In one question, individuals wereasked if they would leave...
- Q 1. Periodically, the county Water Department tests the drinkingwater of homeowners for contminants such as lead and copper. Thelead and copper levels in water specimens collected in 1998 for asample...
- Q QUESTION 17 If a sample average is found to be 62.7, and themargin of error is calculated to be 4.6, then the upper end of theconfidence interval for mu would...
- Q Prove that through a point P there are exactly 3 lines parallelto p, the polar of P.
- Q LawyerNurseTeacherControl86985767768678874979A researcher is interested in whether the likeability of acrying woman is affected by the viewer’s knowledge of the woman’soccupation. Twenty participants were shown a video of a womancrying and...
- Q Can a six-month exercise program increase the total body bonemineral content (TBBMC) of young women?That is, we are interested in determining if the exercise programis beneficial, i.e., the mean percent...
- Q B. In a test of the effect of dampness on electric connections,100 electric connections were tested under damp conditions and 150were tested under dry conditions. Twenty of the damp connectionsfailed...
- Q This question is modified from an actual experiment published ina medical journal. A study claimed that people who eat high-fibrecereal for breakfast will on average consume fewer calories forlunch than...
- Q The U.S. Bureau of Mines produces data on the price of Minerals.The data below displays the average prices per year for severalminerals over a decade.Gold($ per oz.)Copper(cents per lb.)Silver($ per...
- Q The conference Board produces a Consumer Confidence Index (CCI)that reflects people's feelings about general business conditions,employment opportunities, and their own income prospects. Someresearchers may feel that consumer confidence is a...
- Q A widget produced by a particular process has probability .1 ofbeing defective. A test can be performed which has 99% accuracy.That is, if a defective widget is tested, the test...
- Q A stationary store has decided to accept a large shipment ofballpoint pens if an inspection of 20 randomly selected pendsyields no more than two defective pens. (a) Find the probabilitythat...
- Q The bureau of labor statistics reported in a recent yearthat’s 16% of US nonfarm workers government employees. A randomsample of 50 workers is drawn.A) is it appropriate to use a...
- Q This is observation from previous years about the impact ofstudents working while they are enrolled in classes, due tostudents too much work, they are spending less time on theirclasses. First,...
- Q A researcher conducts an independent-measures study examiningthe effectiveness of a group exercise program at an assisted livingfacility for elderly adults. One group of residents is selected toparticipate in the program,...
- Q In a random sample of 23 people, the mean commute time to workwas 30.3 minutes and the standard deviation was 7.1 minutes. Assumethe population is normally distributed and use a?...
- Q Assume that both populations are normally distributed.?(a) Test whethermu 1 not equals mu 2?1??2at thealpha equals 0.01?=0.01level of significance for the given sample data.Population 1Population 2n1717x bar14.614.619.819.8s4.24.23.73.7Determine the? P-value for...
- Q Conduct an Internet search to find a study whose statisticalresults have been published in the news or any other public forum.Applying the following guidelines, critically analyze the study’sreported content and...
- Q The probability that A wins B is p. And the probability that Bwins A is q.If you win 2 more times than opponent, the game is over.What is the the...
- Q PLEASE ANSWER THE THREE QUESTION WITH CORRCT DEATILASWho may request a copy of a birth and death certificate?If the mother is not married, can the father’s name be placed onthe...
- Q Nuclear physicist found the probability of neutral particlesbeing reflected was 0.16 and of being absorbed as 0.84.a. What is the expected number of particles that would bereflected if 1,000 are...
- Q Describe how to write the null and alternative hypotheses basedon a claim. Provide at least one example to clarify yourexplanation.
- Q During the independent research 30 women were chosento measure their weight. Themean value of weight is 66 kg and it is known from the previousexperience that the weight is normallydistributed...
- Q Prove that if two of the opposite sides of a quadrilateral arerespectively the greatest and the least sides of the quadrilateral,then the angles adjacent to the least are greater than...
- Q Test the given claim. Identify the null? hypothesis,alternative? hypothesis, test? statistic, P-value, and then statethe conclusion about the null? hypothesis, as well as the finalconclusion that addresses the original claim....
- Q 7. A recent Iowa straw poll for the Democratic Primary found thefollowing number of supporters for these candidates (ObservedFrequencies).Elizabeth WarrenBernie SandersJoe BidenPete Buttigieg20251025a) Specify the null and alternative hypotheses for...
- Q Does the average Presbyterian donate more than the averageCatholic in church on Sundays? The 44 randomly observed members ofthe Presbyterian church donated an average of $22 with a standarddeviation of...
- Q The commercial for the new Meat Man Barbecue claims that ittakes 20 minutes for assembly. A consumer advocate thinks that theassembly time is lower than 20 minutes. The advocate surveyed...
- Q A car company is attempting to develop a reasonably pricedgasoline that will deliverimproved gasoline mileages. As part ofits development process, the company would like to compare theeffects of three types...
- Q Show how to answer this in EXCEL ONLY, NO megastator minitab, etc.. Please highlight what data tools orformulas were used.A survey investigated the public’s attitude toward the federaldeficit. Each sampled...
- Q if one card is drawn from an ordinary deck of card, find theprobability of getting each event. a. a 7 or an 8 or a 9, b. aspade or a...
- Q Ask Your Teacher Recent studies have shown that about 20% ofAmerican adults fit the medical definition of being obese. A largemedical clinic would like to estimate what percentage of theirpatients...
- Q You wish to test the following claim at a significance level of?=0.02 H0:?=62.5 H1:?>62.5You believe the population is normally distributed, but you do notknow the standard deviation. You obtain a sample of...
- Q In a sample of 169 trees, we found that a pear tree grow toaverage height of 32 feet and a sample standard deviation of 5feet. The distribution is approximately normal....
- Q A company wants to build a plant but is considering the size.The table below shows their payoffs under different states ofdemand.DemandLow (p=0.45)High (p=0.55)Small Plant500000500000Medium Plant200000800000Large Plant-2000001000000They can hire a consultant...
- Q A survey of 1060people who took trips revealed that 94 of themincluded a visit to a theme park. Based on those survey results, amanagement consultant claims that less than 11...
- Q A random variable X has density function f(x) = 4x ( 1 +x2)-3 for x > 0.Determine the mode of X.
- Q A local bank needs information concerning the account balance ofits customers. A random sample of 15 accounts was checked. The meanbalance was $686.75 with a standard deviation of $256.20.A. Construct...
- Q Problem 2.22 (modified from Montgomery, 9th edition) The meanshelf life of a carbonated drink should exceed 120 days. Tenbottles are randomly selected and tested, and the results below areobtained: shelf...
- Q A person's blood glucose level and diabetes are closely related.Let x be a random variable measured in milligrams ofglucose per deciliter (1/10 of a liter) of blood. Suppose thatafter a...
- Q Discuss the differences between Attributes Control Charts andVariables Control Charts and how you believe one can benefit acompany/organization over the other, and why/why not.(Note: Pleaee, the answer has to be...
- Q The population proportion is .65 . What is the probability thata sample proportion will be within + or - .02 of the populationproportion for each of the following sample sizes?...
- Q The following should be performed using R and the R codeincluded in your submission.To obtain first prize in a lottery, you need to correctly choosen different numbers from N and...
- Q Acme Outdoors Co. is introducing a new line of sport all-terrainvehicles (ATVs). Acme is considering program proposals from twocompeting companies: A & B. A's marketing plan is expected togenerate high...
- Q In a behavioral medicine study, Cease, Now, AndLive-Longer(2017) found that there was a difference ineffectiveness of using rapid smoking as a treatment of smokingcessation as compared to a control method....
- Q 1.a. A researcher wishes to estimate the proportion of adults whohave? high-speed Internet access. What size sample should beobtained if she wishes the estimate to be within 0.3 with 99%confidence?b.it...
- Q Let x represent the dollar amount spent on supermarketimpulse buying in a 10-minute (unplanned) shopping interval. Basedon a certain article, the mean of the x distribution isabout $49 and the...
- Q The weights for newborn babies is approximately normallydistributed with a mean of 5lbs and a standard deviation of 1.5lbs.Consider a group of 1,000 newborn babies:How many would you expect to...
- Q A dairy scientist is testing a new feed additive. She chooses 13cows at random from a large population. She randomly assigns n_old= 8 to the old diet and n_new =...
- Q Use the accompanying paired data consisting of registered boats?(tens of? thousands) and manatee fatalities from boat encounters.Let x represent the number of registered boats and let y representthe corresponding number...
- Q Consider two random variables X and Y, with Y = (a+bX)- Find E(Y)- Find Cov(X,Y)- Find Corr(X,Y)
- Q (9). The National Health Statistics Reports dated Oct. 22, 2008,stated that for a sample size of 277 18-year-old American males,the sample mean waist circumference was 86.3 cm. A somewhatcomplicated method...
- Q 13. Using traditional methods, it takes 94 hours to receive abasic flying license. A new license training method using ComputerAided Instruction (CAI) has been proposed. A researcher used thetechnique with...
- Q In one of PLE’s manufacturing facilities, a drill press that hasthree drill bits is used to fabricate metal parts. Drill bits breakoccasionally and need to be replaced. The present policy...
- Q probation officer caseloads have a mean of 115 and a standarddeviation of 10. Caseloads sizes are normally distributed.a. what is the probabily in proportion of percentage that aprobation officer has...
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