Basic Math question and answers for August 24, 2023
- Q For the data set144477791213141414151616171719202223232424252626272929313434353536374344444748484950525254545556565858595960646465666969737676777779(a) Find the 76th percentile.(b) Find the 42nd percentile.(c) Find the 16th percentile.(d) Find the 65th percentile.
- Q Your claim results in the following alternativehypothesis:Ha : μ ≠≠166which you test at a significance level of α=.02α=.02.Find the positive critical value, to three decimal places.zα/2 =You are performing...
- Q Suppose x has a normal distribution with a mean of 79 and avariance of 441.00. If a sample of 15 were randomly drawn from thepopulation, find the probability of  ...
- Q Using R StudioNow, set the seed to 348 with `set.seed()`. Then take a sampleof size 10,000 from a normal distribution with a mean of 82 and astandard deviation of 11.(a)...
- Q In the Focus Problem at the beginning of this chapter, a studywas described comparing the hatch ratios of wood duck nestingboxes. Group I nesting boxes were well separated from each...
- 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 when is it more convient to use que theory rather thansimulations
- Q The distribution of weights for 12 month old baby girls in theUS is approximately normal with mean u = 21 pounds and standarddeviation of 2.2 pounds.a) if a 12 month...
- Q Let X represent the weight of the students at a university.Suppose X has a mean of 75 kg and a standard deviation of 10 kg.Among 100 such randomly selected students...
- Q 5. Some state lotteries have a pick 3 game, where you canchoose any number from 000 to 999. The state picks the winningnumber at random.a) How many possible numbers can...
- Q Bhola Bhikhu is thinking about adding a new stock to herportfolio. Based on advice from a friend who claimed to make a lotof money, she decides to use the price...
- Q Define a joint distribution for two random variables (X,Y) suchthat (i) Cov(X,Y)=0 and (ii) E[Y I X] is not equal to E[Y].How do I define a joint distribution that satisfies...
- Q A company that develops over-the-counter medicines is working ona new product that is meant to shorten the length of sore throats.To test their product for effectiveness, they take a random...
- Q The medical communityunanimously agrees on the health benefits of regular exercise, butare adults listening? During each of the past 15 years, a pollingorganization has surveyed americans about their exercise habits....
- Q Problem Set 2: Linear Regression AnalysisResearch Scenario: A social psychologist isinterested in whether the number of days spent in a refugee camppredicts trauma levels in recently resettled refugees. Heinterviews 17...
- Q Learning Objective 3 – Identify the Design of a particularstudy1) To determine if conversations about HIV status decreases the riskof acquiring HIV among men having sex with me (MSM). From...
- Q To determine whether there is an attendance rate drop of anational conference this year (consider as 1) than last year(consider as 2), a sample of 400 people this year and...
- Q A random sample of 12 second-year university students enrolledin a business statistics course was drawn. At the course'scompletion, each student was asked how many hours he or she spentdoing homework...
- Q Women’s heights are N(64, 3). Suppose female HSbasketball players are N(68.2, 2.1). Which event is lesslikely?Group of answer choicesA woman from the general population being taller than 67â€.A female HS...
- Q In the 2015 federal election, 39.5% of the electorate voted forthe Liberal party, 31.9% for the Conservative party, 19.7% for theNDP, 4.7% for the Bloc Quebecois and 3.5% for the...
- Q The maintenance manager at a trucking company wants to build aregression model to forecast the time (in years) until the firstengine overhaul based on four explanatory variables: (1) annualmiles driven...
- Q 10.4: Inferences About the Difference Between Two PopulationProportionsIn a test of the quality of two television commercials, eachcommercial was shown in a separate test area six times over aone-week period....
- Q ***PLEASE SHOW HOW TO SOLVE IN EXCEL*** NOT HANDWRITTEN5) The letter grades on the midterm exam given in a largemanagerial statistics class are normally distributed with mean 75and standard deviation...
- Q 14. Softswift, a software developer, is trying to determine ifany of three potential subcontractors has better programmers inorder to outsource a development project. The three subcontractorsagreed to test five pro-grammers,...
- Q A manufacturer of TV sets claims that at least 98% of its TVsets can last more than 10 years without needing a single repair.In order to verify and challenge this...
- Q The following data are from an experiment designed toinvestigate the perception of corporate ethical values amongindividuals who are in marketing. Three groups are considered:management, research and advertising (higher scores indicate...
- Q You may need to use the appropriate technology to answer thisquestion.Consider the following data for a dependent variable yand two independent variables,x1andx2.x1x2y301293471010825171125116178405945119175747170361211759131427616210The estimated regression equation for these data isÅ· =...
- Q You may need to use the appropriate appendix table or technologyto answer this question.According to the National Association of Colleges and Employers,the 2015 mean starting salary for new college graduates...
- Q Creating a Digital SurveyCreate the shareable link for your survey and paste itin as the submission for this assignment.Collect the following information:AgeGenderBirth MonthHeight (in Inches)Shoe SizeEye ColorNumber of hours of...
- Q Use technology and the given confidence level and sample data tofind the confidence interval for the population mean mu μ. Assumethat the population does not exhibit a normal distribution. Weightlost...
- Q Forecast the price index for Q3 2018 using a​ two-period simplemoving average.(Round to two decimalplaces)Calculate the MAD for the forecast in part a(Round to two decimalplaces)Forecast the price index for...
- Q The 58th annual convention of the American Legion was held inPhiladelphia from July 21 until July 24, 1976. People at theconvention included American Legion delegates, their families, andother Legionnaires who...
- Q Summarize key data distribution concepts including probabilitymass functions (PMF), probability density functions (PDF), andcumulative distribution functions (CDF). Based on your organizationor any organization you are most familiar with, provide an...
- Q For the data set1234777811121215151617171718202022242425262626262730323233343436383943444546474748515252535454545556585859616365656769707375757677777980818282(a) Find the 79th percentile.(b) Find the 44th percentile.(c)Find 19th percentile.(d) Find the 66th percentile.
- Q 1. What are the assumptions for various forms ofhypothesis testing?2. Compare the sampling distribution with the populationdistribution. Consider how variance may or may not differ betweenthe two.3. If we reject...
- Q A basket contains 100 balls.40 are red,45 are orange and 15 areyellow.Three balls will be drawn out one at a time at random withreplacement.Match the probabilities.(a) P(all three draws are...
- Q Here is a bivariate data set.x  y59.7  6.150.8  22.660.7  -144.2  28.353  13.852.5  16.345.7  26.451.2  30.853.7  4.9Find the correlation coefficient and report it accurate to threedecimal places.r =What proportion of the...
- Q 1.A recent survey reported in BusinessWeek dealt with thesalaries of CEOs at large corporations and whether companyshareholders made money or lost money.CEO PaidMore Than$1 MillionCEO PaidLess Than$1 MillionTotal  Shareholders made money6        15        21...
- Q Explain the following issues using diagram (Graphs)a) Relationship between f(x) and F(x) for a continuousvariable,b) explaining how a uniform random variable can be used tosimulate X via the cumulative distribution...
- Q At Community Hospital, the burn center is experimenting with anew plasma compress treatment. A random sample of n1 = 324 patientswith minor burns received the plasma compress treatment. Of thesepatients,...
- Q The following data represent petal lengths (in cm) forindependent random samples of two species of Iris. Petal length (incm) of Iris virginica: x1; n1 = 35 5.1 5.6 6.2 6.1...
- Q Data are gathered on each car in the motor pool, regardingnumber of miles (in thousand miles) driven in a given year, andmaintenance costs (in thousand dollars) for that year:Part of...
- Q The Apex corporation produces corrugated paper. It has collectedmonthly data from January 2001 through March 2003 on the followingtwo variables:y= total manufacturing cost per month (In thousands of dollars)(COST)x= total...
- Q Thirty-four small communities in Connecticut (population near10,000 each) gave an average of x = 138.5 reported casesof larceny per year. Assume that σ is known to be 44.3cases per year.(a)...
- Q Numerous studies haveshown that IQ scores have been increasing, generation bygeneration, for years (Flynn, 1984, 1999). The increase is calledthe Flynn Effect, and the data indicate that the increase appearsto...
- Q How would we determine the right comparative method to use whenanalyzing the different studies that we are interested in using inour research?
- Q 1) The daily demand, D, of sodas in the breakroom is:D0123P=(D=d)0.10.20.40.3i) Find the probability that the demand is atmost 2.ii) Compute the average demand of sodas.iii) Compute SD of daily...
- Q South Shore Construction builds permanent docks and seawallsalong the southern shore of long island, new york. Although thefirm has been in business for only five years, revenue hasincreased from $320,000...
- Q QUESTION FIVEThe diameter of shafts produced in a machine follows a normaldistribution with the variance of 81mm. A random sample of 36shafts taken from the production has its mean diameter...
- Q 1. The average production cost for major movies is 57 milliondollars and the standard deviation is 22 million dollars. Assumethe production cost distribution is normal. Suppose that 46randomly selected major...
- Q ***PLEASE SHOW HOW TO SOLVE IN EXCEL*** NOT HANDWRITTEN7) For borrowers with good credit scores, the mean debt forrevolving and installment accounts is $15,015. Assume the standarddeviation is $3,540 and...
- Q ***PLEASE SHOW HOW TO SOLVE IN EXCEL*** NOT HANDWRITTENGiven that z is a standard normal random variable, find z foreach situation.a. The area to the left of z is .9750.b....
- Q A company that makes language learning software wants todetermine which of two approaches (Method A or Method B) tolearning vocabulary would lead to the largest number of recalledwords. The company...
- Q A Gallup Poll showed that 44% of Americans are satisfied withthe way things are going in the United States. Suppose a sample of25 Americans are selected.Find the probability that no...
- Q 23. Late in summer of 1996, Tiger Woods becamea professional golfer. This highly publicized event followed asensational college career at Stanford University, where Tiger wonthree United States Amateur Championships. Tiger...
- Q 1. Draw two histograms to represent two populations with acommon mean, but with a standard deviationof the second population larger than that of the first.2. Draw two histograms to represent...
- Q . Consider this hypothesis test:H0: p1 - p2 = < 0Ha: p1 - p2 > 0Here p1 is the population proportion of “happy†of Population1 and p2 is the population...
- Q Imagine a class where nearly everyone scores between 83-84%,with hardly any dispersion beyond this narrow peak. How would youdescribe this distribution in terms of kurtosis?
- Q True or False1) A correlation coefficient based on a scatter plot measuresthe proportion of data lying on the regression line.2)Which of the following is/are incorrect statement(s) about thecorrelation between two...
- Q Today’s Electronics specializes in manufacturing modernelectronic components. It also builds the equipment that producesthe components. Phyllis Weinberger, who is responsible for advisingthe president of Today’s Electronics on electronic manufacturingequipment, has...
- Q You may need to use the appropriate technology to answer thisquestion.A magazine subscriber study asked, \"In the past 12 months, whentraveling for business, what type of airline ticket did youpurchase...
- Q For the following scenario, answer the following questions. Theunderlined text is the name of the StatCrunch data set to be usedfor that part. Please note, do not conduct inference in...
- Q Caffeine is the world's most widely used stimulant, withapproximately 80% consumed in the form of coffee. Participants in astudy investigating the relationship between coffee consumption andexercise were asked to report...
- Q Terry is a small business entrepreneur and owns 6 buildings forbusiness use. The probability distribution below describes expectedproperty losses for the group of 6 buildings. Assume that theproperty exposures are...
- Q A magazine provided overall customer satisfaction scores forAT&T, Sprint, T-Mobile, and Verizon cell-phone services inmajor metropolitan areas throughout the United States. The ratingfor each service reflects the overall customer satisfactionconsidering...
- Q A manufacturer of banana chips would like to know whether itsbag filling machine works correctly at the 431 gram setting. It isbelieved that the machine is underfilling the bags. A...
- Q Part 1. Suppose you are told that a 95% confidence interval forthe average price of a gallon of regular gasoline in your state isfrom $2.99 to $3.99. Use the fact...
- Q A psychologist hypothesizes that depression decreases withaging. It is known that the general population scores a 41 on astandardized depression test where a higher score indicates moredepression. The psychologist obtains...
- Q The normal monthly precipitation (in inches) for September islisted for 20 different U.S. Cities.3.5Â Â Â Â Â Â 1.6Â Â Â Â Â Â 2.4Â Â Â Â Â Â 3.7Â Â Â Â Â Â 4.1Â Â Â Â Â Â 3.9Â Â Â Â Â Â 1.0Â Â Â Â Â Â 3.6Â Â Â Â Â Â 4.2Â Â Â Â Â Â 3.4Â Â Â Â Â Â 3.7Â Â Â Â Â Â 2.2Â Â Â Â Â Â 1.5Â Â Â Â Â Â 4.23.4Â Â Â Â Â Â 2.7Â Â Â Â Â Â 0.4Â Â Â Â Â Â 3.7Â Â Â Â Â Â 2.0Â Â Â Â Â Â 3.6FindMean of the dataMedian of the dataRange of the dataInterquartile range of the data. Â Â
- Q Anystate Auto Insurance Company took a random sample of 364insurance claims paid out during a 1-year period. The average claimpaid was $1525. Assume σ = $258.Find a 0.90 confidence interval...
- Q A political scientist hypothesize that a political ad willincrease attitudes about a particular issue. The scientist randomlyasks 21 individuals walking by to see the ad and then take a quizon...
- Q Given the following numbers:Â Â 25 16 61 18 15 20 15 2024 17 19 28, derive the mean, median, mode, variance, standarddeviation, skewness, kurtosis, range, minimum, maximum, sum, andcount. Interpret...
- Q Discuss data collection methods used in the world around us. Tellus what method (random sample , convenience , stratified,cluster)isused.Discuss the motivation of the organization collecting the datafor utlzing the method...
- Q For mallard ducks and Canada geese, what percentage of nests aresuccessful (at least one offspring survives)? Studies in Montana,Illinois, Wyoming, Utah, and California give the followingpercentages of successful nests (Reference:...
- Q please do this as simple as you can!if you flip a fair coin 10 times what is theprobability ofa) getting all tails?b) getting all headsc) getting atleast 1 tails
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