Basic Math question and answers for September 05, 2023
- Q A football receiver, Harvey Gladiator, is able to catch twothirds of the passes thrown to him. He must catch four passes forhis team to win the game. The quarterback throws...
- Q Tommy has a bag with 7 marbles in it, and decides to draw 3marbles from the bag randomly. The marbles in the bag are all thesame, but some of the...
- Q A radio station runs a promotion at an auto show with a moneybox with 14 ​$50 ​tickets, 10 ​$25 ​tickets, and 15 ​$5 tickets.The box contains an additional 20 ​\"dummy\"...
- Q 1. In many animal species the males and females differ slightlyin structure, coloring, and/or size. The hominid speciesAustralopithecus is thought to have lived about 3.2 million yearsago. (“Lucy,†the famous...
- Q Just Part B pleaseA global research study found that the majority of​ today'sworking women would prefer a better​ work-life balance to anincreased salary. One of the most important contributors to​work-life...
- Q A construction company that installs drywall wanted toinvestigate how a person’s age affects how much dry wall they caninstall in a week. On one hand, it would seem that the...
- Q Consider the following three data sets which shows the students’results for test in thenew course launched in the undergraduate program across threesections.Class A:{65;75;73;50;60;64;69;62;67;85}Class B:{85;79;57;39;45;71;67;87;91;49}Class C: {43;51;53;110;50;48;87;69;68;91}Using appropriate statistical tools- numerical...
- Q The heights of South African men are normally distributed with amean of 69 inches and a standard deviation of 4 inches. What is theprobability that a randomly selected South African...
- Q Using data from 50 workers, a researcher estimates Wage = β0 +β1 Education + β2 Experience +β3 Age + ε, where Wage is the hourlywage rate and Education, Experience, and...
- Q In each case, determine the value of the constant cthat makes the probability statement correct. (Round your answersto two decimal places.)(a)    Φ(c) = 0.9854(b)    P(0 ≤ Z ≤ c)= 0.3078(c)    P(c ≤ Z)...
- Q A plan for an executive travelers’ club has been developed byairline on the premise that 5% of its current customers wouldqualify for membership. A random sample of 500 customers yielded...
- Q “Learn to Write A Great Country Song†has become the top sellingbook and Shania wanted to know whether the book worked better forone gender. So Shania asked 10 males and...
- Q NEEDS TO BE SOLVED WITH A TEMPLATE FOR HYPOTHESIS TESTING INEXCELA company can choose between two brands of light bulbs for anoffice complex and wants to know if one brand...
- Q A random sample of 51 adult coyotes in a region of northernMinnesota showed the average age to be x = 2.05 years,with sample standard deviation s = 0.88 years. However,...
- Q Components of a certain type are shipped to a supplier inbatches of ten. Suppose that 49% of all such batches contain nodefective components, 33% contain one defective component, and 18%contain...
- Q A company operates a solar installation in the desert in WesternAustralia. It is reviewing its operating practices with a view tomaking them more efficient. The solar installation generateselectric power from...
- Q Passenger miles flown on Northeast Airlines, a commuter firmserving the Boston hub, are asfollows for the past 12 weeks:WEEK ACTUAL PASSENGER MILES (1,000S)1 Â Â Â Â Â Â Â Â Â Â 172 Â Â Â Â Â Â Â Â Â Â 213 Â Â Â Â Â Â Â Â Â Â 194 Â Â Â Â Â Â Â Â Â Â 235 Â Â Â Â Â Â Â Â Â Â 186 Â Â Â Â Â Â Â Â Â Â 167 Â Â Â Â Â Â Â Â Â Â 208...
- Q A schooladministrator is interested in a schools performance inmath.  He administers a math test to a sample of 30students and obtains a mean of 84.25.  The standarddeviation of this sample was 8.4....
- Q Watch Corporation of Switzerland claims that its watches onaverage will neither gain nor lose time during a week. A sample of18 watches provided the following gains (+) or losses (−)...
- Q 2. (Binomial model) Consider a roulette wheel with 38 slots, ofwhich 18 are red, 18 are black, and 2 are green (0 and 00). Youspin the wheel 6 times.(a) What...
- Q eBook Almost all U.S. light-rail systems use electric cars thatrun on tracks built at street level. The Federal TransitAdministration claims light-rail is one of the safest modes oftravel, with an...
- Q Bob is an amoeba that behaves as follows: at the end of any givenminute, Bob either splits into two identical and independent copiesof himself, stays the same without splitting, or...
- Q Dylan Jones keptcareful records of the fuel efficiency of his new car. After thefirst twelve times he filled up the tank, he found the mean was22.9 miles per gallon (mpg)...
- Q A.) A manufacturer knows that their items have a normallydistributed lifespan, with a mean of 6.9 years, and standarddeviation of 1 years. If you randomly purchase one item, what isthe...
- Q Slices of pizza for a certain brand of pizza have a mass that isapproximately normally distributed with a mean of 67.1 grams and astandard deviation of 2.2 grams. a) For...
- Q A study conducted by Stanford researchers asked children in twoelementary schools in San Jose, CA to keep track of how muchtelevision they watch per week. The sample consisted of 198children....
- Q 2.In a test of the hypothesis H0: μ = 50 versus Ha: μ< 50, a sample of 40 observations is selected from a normalpopulation and has a mean of 49.0...
- Q Write a few sentences comparing bivariate correlation andbivariate regression. You need to discuss when it is appropriate touse each of these statistics.
- Q The data set airquality is one of R’s included data sets. Itshows daily measurements of ozone concentration (Ozone), solarradiation (Solar.R), wind speed (Wind), and temperature (Temp) for5 summer months in...
- Q What is a linear regression analysis? What does itprovide you? Your answer should address development of a linearresponse equation and associated uncertainty inprediction.
- Q 1. Explain in words what a confidence interval means to someonewho has never taken statistics.2. There is concern that rural Minnesota is aging at a differentrate than urban Minnesota. We...
- Q Suppose Y is an random variable. If P(a<Y<2a)=0.16 and themedian of Y is 5, what is a? Note: There may be more than onesolution. Report all.
- Q This assignment is a series of short answer, multiple choice,and fill-in-the-blank questions based on the article, “The Effectsof Hospital-Level Factors on Patients' Ratings of PhysicianCommunication†(Al-Amin & Makaremet, 2016).What statistical...
- Q So this week we learned about the four V's of Big data -Velocity, Volume, Veracity and Variety. As we know the velocity ofdata can vary so does it affect the...
- Q A random sample is drawn from a population with mean μ= 74 and standard deviation σ = 6.2. [You may findit useful to reference the z table.]a. Is the sampling...
- Q Conduct a hypothesis test to determine if  companieswith negative revenue change tend to be on the (500) market lesstime (and/or how much less time)?The data is below. Please show all work...
- Q Assume that z is the test statistic. (Give your answers correctto two decimal places.)(a) Calculate the value of z for Ho: μ = 10, σ = 2.8, n = 36,...
- Q You discover an isolated population of island squirrels andcollect 200 of them, finding leucism 12. Perform a hypothesis testfor a difference in the proportions of leucism among this islandpopulation and...
- Q What are the issues with large significance values?
- Q The Toyota Camry is one of the best-selling cars in NorthAmerica. The cost of a previously owned Camry depends on manyfactors, including the model year, mileage, and condition. Toinvestigate the...
- Q Dry Goods SalesThe data is for weekly sales in the dry goods department at aWal*Mart store in the Northeast.  Peak values, I.e.spikes, usually occur at holiday periods.  Week 1 is thefirst week...
- Q The following data come from the 2016 ANES, V36 and V87W, bothrecoded into 3 categories. One question asked about partyidentification. The other asked about support for building a wallon the...
- Q We want to test the claim that people are taller in the morningthan in the evening. Morning height and evening height weremeasured for 30 randomly selected adults and the difference(morning...
- Q The weight of navel oranges of a domestic farm is normallydistributed with a mean of 8.0oz and a standard deviation of 1.5oz.Suppose that you bought 10 oranges randomly sampled.a) what...
- Q A high school teacher hypothesizes a negative relationshipbetween performance in exams and performance in presentations. Toexamine this, the teacher computes a correlation of 0.58 from arandom sample of 18 students...
- Q A factorial experiment was designed to test for any significantdifferences in the time needed to perform English to foreignlanguage translations with two computerized language translators.Because the type of language translated...
- Q a human resource survey revealed that 30% of job applicantscheat on their psychometric test. use the binomial formula to findthe probability that the number of job applicants in a sample...
- Q perform Levene’s test for equal variance. Note, this is aoneâ€way ANOVA testing for the equality of 16 variances (eachcombination of promotion/discount). 0.1 signigicance2. perform 2-way anova with replicationTo answer these...
- Q To characterize random uncertainty of a pressure measuringtechnique, twelve pressure measurements were made of a certainconstant pressure source, giving the following results in kPa: 125,128, 129, 122, 126, 125, 125,...
- Q Consider a Bernoulli random variable X such that P(X=1) = p.Calculate the following and show steps of your work:a) E[X]b) E[X2]c) Var[X]d) E[(1 – X)10]e) E[(X – p)4]f) E[3x41-x]g) var[3x41-x]
- Q 1-what is the dummy variable and what is the purposeof included in regression model ?2- explaining the meaning of adjust r square?3-if adjust r square computed. would it be higher...
- Q The following table shows ceremonial ranking and type of potterysherd for a random sample of 434 sherds at an archaeologicallocation.Ceremonial RankingCooking JarSherdsDecorated Jar Sherds(Noncooking)RowTotalA9144135B9649145C8173154ColumnTotal268166434Use a chi-square test to determine if...
- Q The U.S. Bureau of Economic Statistics reports that the averageannual salary in the metropolitan Boston area is $50,542. Supposeannual salaries in the metropolitan Boston area are normallydistributed with a standard...
- Q Health self-evaluation as an indicator of general health wasinvestigated in two groups of older adults. Older adults in onegroup were dog owners while in the second group older adults didnot...
- Q Overproduction of uric acid in the body can be an indication ofcell breakdown. This may be an advance indication of illness suchas gout, leukemia, or lymphoma.†Over a period of...
- Q A researcher wants to determine the impact of soil type on thegrowth of a certain type of plant. She grows three plants in eachof four different types of soil and...
- Q You have taken a random sample of 286 children in Virginia’shomeless shelters to establish their needs (using an establishNeeds Scale). The mean is 5.32, the mode is 6, and the...
- Q Problem 1: Oil Production Data: The Data in the following arethe annual world crude oil production in millions of barrels forthe period 1880-1988. The data are taken from Moore and...
- Q (1) Symposium is part of a larger workreferred to as Plato's Dialogues. Wishart and Leach†foundthat about 21.4% of five-syllable sequences in Symposiumare of the type in which four are...
- Q An advertising executive claims that there is a difference inthe mean household income for credit cardholders of Visa Gold andof MasterCard Gold. A random survey of 8 Visa Gold cardholdersresulted...
- Q A marketing research firm wishes to study the relationshipbetween wine consumption and whether a person likes to watchprofessional tennis on television. One hundred randomly selectedpeople are asked whether they drink...
- Q Let X and Y have the joint pdf f(x, y) = 8xy, 0 ≤ x ≤ y ≤ 1. (i)Find the conditional means of X given Y, and Y given...
- Q 3. Take the mean and standard deviation of data set A calculatedin problem 1 and assume that they are population parameters (μ andσ) known for the variable fish length in...
- Q Carleton Chemical claims that they can produce an average ofmore than 800 tons of meladoneper week. A random sample of 36 weeks of production yielded asample mean of 823 tons,...
- Q 1. What is the z-score associated with the 75th percentile?2. What z-scores bound the middle 50% of a normaldistribution?3. What z-score has 10% of the distribution above it?4. What z-score...
- Q The New Jersey Department of Public Health offers psychologicalsupport programs for substance abuse patients with depression. Itis suggested that the type of depression varies by the type ofsubstance abuse. If...
- Q A researcher wishes to determine whether there is a significantrelationship between the gender of psychology students and therefreshment drink they prefer. The results obtained from a surveyof students are presented...
- Q You may need to use the appropriate appendix table or technologyto answer this question.Consider the following hypothesis test.H0: μ = 30Ha: μ ≠30The population standard deviation is 14.Use  α =...
- Q Refer to the Lincolnville School District bus data.Conduct a test of hypothesis to reveal whether the meanmaintenance cost is equal for each of the bus manufacturers. Usethe .01 significance level.Conduct...
- Q At a university the historical mean of scholarship examinationscores for freshman applications is 800. A historical populationstandard deviation  σ = 150 is assumed known.Each year, the assistant dean uses a sample...
- Q A researcher selects a sample of 49 participants from apopulation with a mean of 12 and a standard deviation of 3.5. Whatis the probability of selecting a sample mean that...
- Q Have you ever tried to get out of jury duty? About 25% of thosecalled will find an excuse (work, poor health, travel out of town,etc.) to avoid jury duty.†(a) If...
- Q For patients who have been given a diabetes test, blood-glucosereadings are approximately normally distributed with mean 128 mg/dland a standard deviation 8 mg/dl. Suppose that a sample of 3patients will...
- Q Part 1 Binomial Distribution [Mark 20%/cancer type,40% total mark]Five year survival chance from any cancer depends on manyfactors like availability of treatment options, expertise ofattending medical team and more. Five...
- Q ( PLEASE SHOW ALL YOUR WORK)You will need your ticker code (company abbreviation) for stockprices for this question. Use your ticker code to obtain theclosing prices for the following two...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!