Basic Math question and answers for September 22, 2023
- Q A manufacturer of chocolate candies uses machines to packagecandies as they move along a filling line. Although the packagesare labeled as 8 ounces, the company wants the pack-ages to containa...
- Q George Caloz & Frères, located in Grenchen, Switzerland,makes prestige high-end custom watches in small lots. One of thecompany’s products, a platinum diving watch, goes through anetching process. The company has...
- Q Your leader has asked you to evaluate the defects basedon insurance claim type (auto vs. injury). You have a total of 600claims, with 400 auto, 200 injury, 100 with a...
- Q The response time in milliseconds was determined for threedifferent types of circuits in an electronic calculator. Theresults are recorded in table:Curcuit TypeResponse (R)RRRR119222018252202133274031615182617(a) What is the value of LSD? Use...
- Q The National Student Loan Survey asked the student loanborrowers in their sample about attitudes toward debt. Below aresome of the questions they asked, with the percent who responded ina particular...
- Q A study of iron deficiency among infants compared samples ofinfants following different feeding regimens. One group containedbreast-fed infants, while the infants in another group were fed astandard baby formula without...
- Q Suppose that you roll a die and your score is thenumber shown on the die. On the otherhand, suppose that your friend rolls five dice and his score is thenumber...
- Q 3. The weights in pounds of 30 preschool children are listedbelow. Find the five number summary of the data set.25 25 26 26.5 27 27 27.5 28 28 28.529 29...
- Q HOMEWORK 1This assignment is designed to illustrate how a software packagesuch as Microsoft Excel supplemented by an add-in such as PHStatcan enable one to calculate minimum sample sizes necessary in...
- Q According to a Virginia Tech survey, college students make anaverage of 11 cell phone calls per day. Moreover, 80% of thestudents surveyed indicated that their parents pay their cell phoneexpenses...
- Q In excellt-Test Assuming Equal Variancest-Test With Paired Two Samples for MeansAnalysis of VarianceCorrelation CoefficientSimple RegressionSkills and self-esteem are believed to influence jobperformance. To investigate this, an experimenter split 14 recentparolees...
- Q Using traditional methods, it takes 104 hours to receive a basicdriving license. A new license training method using Computer AidedInstruction (CAI) has been proposed. A researcher used thetechnique with 100...
- Q Out of the variables provided below:1) Select one dependent variable, one primary independentvariable, and one potential confounding variable that will be usedfor linear regression.2) State a possible research question and...
- Q Please do this task by R.a) Revise the simulation shown in the lecture with the aim ofconstructing the empirical sampling distribution of beta_hat, basedon 5000 trials.b) According to the lecture,...
- Q There is an interesting story involving Blaise Pascal, PierreFermat, and the Chevalier de Mere. Consider the events A = {atleast one ‘one’ would appear when four six- sided dice are...
- Q Beer drinkers order anaverage of 50 pitchers of beer per hour at Nick's Pub inBloomington, Indiana.Answer the following questions:• What is theprobability that at least 100 pitchers are ordered in...
- Q According to a recent article, 32% of drivers had driven drowsyin the past month. (Source:Thenationshealth.aphapublications.org/content/41/10/E52.fuII)Suppose law enforcementofficials are planning a survey of 1000 drivers to determine whatproportion are driving drowsy.a....
- Q Describe the parameters for visual analysis of case study data.How does analysis through single case effect size statistics effectthe confidence in our predictions?
- Q Suppose that you as a researcher wanted to examine the impact ofpolice officer rank on perceptions of friendliness by citizens inCollege Park, MD. Rank is measured as patrol officer, sergeant...
- Q A population has a mean of 128 and a standard deviation of 32.Suppose a sample of size 64 is selected and x is used to estimate?. (Round your answers to...
- Q Samples of peanut butter produced by three differentmanufactures are tested for aflatoxin (ppb), with the followingresults:Brand 1Brand 2Brand 30.52.53.36.31.81.51.13.60.42.75.24.85.51.22.24.30.71.1Use the 0.05 level of significance to test whether thedifferences among the...
- Q Select one (1) project from your working or educationalenvironment that you would use the hypothesis test technique. Next,propose the hypothesis structure (e.g., the null hypothesis, datacollection process, confidence interval, test...
- Q 1. Determine the value for the constant "k" that will make thefunction below a PDF.f(x) = k x^4 for x in (0,2) and f(x) = 0, for all other x...
- Q The College Board National Office recently reported that in2011–2012, the 547,038 high school juniors who took the ACTachieved a mean score of 515 with a standard deviation of 129 onthe...
- Q what are the six steps of a statistical inverstgation? describeeach step in context of the organ donor example.( in your ownwords)
- Q Please share your thoughts about the application of statisticsin today’s business? Also, what are some of the good examples aswhen / how you would apply statistics in business?
- Q A medical researcher claims that the proportion of people takinga certain medication that develop serious side effects is 12%. Totest this claim, a random sample of 900 people taking themedication...
- Q Customers arrive at a local ATM at an average rate of 14 perhour. Assume the time between arrivals follows the exponentialprobability distribution. Determine the probability that the nextcustomer will arrive...
- Q Suppose just over 2500 cell phones are produced at a factorytoday. Management would like to ensure that the phones' displayscreens meet their quality standards before shipping them to retailstores. Since...
- Q Abox contains 7 black balls and a single red ball. Peter and Francesdraw without replacement balls from this urn, alternating aftereach draw until the red ball is drawn. The game...
- Q A shoe salesman wants to see if his female customers have apreference in the color of shoe purchased. He notes the colorpreferences of 100 randomly selected customers. The results:Black=32, Brown=27,...
- Q Is smoking during pregnancy associated with premature births? Toinvestigate this question, researchers selected a random sample of131 pregnant women who were smokers. The average pregnancy lengthfor this sample of smokers...
- Q The SAT and the ACT are the two major standardized tests thatcolleges use to evaluate candidates. Most students take just one ofthese tests. However, some students take both. The data...
- Q explain how experimental design, analysis of variance,and chi square test are used in research.
- Q An engineer wishes to determine if the stopping distance formidsize automobiles is different from that of compact automobilesat 75 mph. The data is shown below.Automobile 1 2 3 4 5...
- Q 2. Purchasing a Home in Upstate New York A quantitatively savvy,young couple is interested inpurchasing a home in northern New York. They collected data on26 houses that had recently sold...
- Q A company has 189 accountants. In a random sample of 50 ofthem, the average number of overtime hours worked in a week was 9.7and the sample standard deviation was 6.2...
- Q A researcher wishes to? estimate, with 90?% ?confidence, thepopulation proportion of adults who eat fast food four to six timesper week. Her estimate must be accurate within 5?% of thepopulation...
- Q Give me a scenario using the probability technique to includethe mean, weighted mean, median and mode for populations andsamples
- Q Let ? ? {1, 2} and ? ? {3, 4} be independent random variableswith PMF-s: ??(1)= 1/2 ??(2)= 1/2 ??(3)= 1/3 ??(4)= 2/3Answer the following questions(a) Write down the joint...
- Q Suppose that each of two investments has a 4% chanceof a loss of $10 million, a 2% chance of a loss of $1 million, anda 94% chance of a profit...
- Q In the following sentences determine the appropriate sampling A,B, C or DA --- RANDOM (SIMPLE RANDOM SAMPLING)B --- SYSTEMATICC --- STRATIFIEDD --- Cumulative (CONGLOMERATES)1- A company is divided by DIRECTIVES,...
- Q A store sells three different clothing designs and has recordedsales of each over five different 24-hour periods:DesignA DesignB Design C 16 33 23 18 31 27 19 37 21 17 29 28 13 34 25Use the Kruskal-Wallis H test and...
- Q Use the data consisting of IQ score and brain volume?(cm cubedcm3?).Find the best predicted IQ score for someone with a brain volumeof 1003 cm cubed. Use a significance level of...
- Q The heights of a female population follow a normal distributionwith a mean of 48 inches and a standard deviation of 6 inches. If arandom sample of 16 subjects were taken,...
- Q You believe that there is a difference in salaries betweengenders in your industry. You know that the average salary formales is $100,000 per year, but you cannot find any information...
- Q The Russell 1000 is a stock market index consisting of thelargest U.S. companies. The Dow Jones industrial Average is basedon 30 large companies. The data giving the annual percentagereturns for...
- Q Nine owners of Honda Civics in Richmond want to know if they getdifferent gas mileage with their cars than what the HondaCorporation reports. Honda of America states that all Honda...
- Q Please discussthe advantages and disadvantages of using surveys to collect datafrom subjects. Why does the response rate to surveys matter? Inyour discussion, please elaborate on a survey you have completed...
- Q PSY-520 Graduate StatisticsTopic 5 – Benchmark – Correlation and Regression ProjectDirections: Use the following information to complete thequestions below. While APA format is not required for the body ofthis assignment,...
- Q what is the purpose of a mission statement
- Q 1.1 In your own words, define and give an example of each of thefollowing statistical terms. a.populationb. sample statistice.c. parameter d.statistical inference1.2 Briefly describe the difference between descriptivestatistics and inferential...
- Q 1. T F The number of defects on a product produced by a processis distributed as a Poisson distribution.2. T F For large binomially distributed populations and smallsamples you can...
- Q Alper, Beatta, and Grandma each pick ?ve cards from a shu?edstandard deck. Alper replaces the card and reshu?es each time hepicks. Beatta picks from the deck without replacement. Grandmarepeatedly picks...
- Q Poly(3-hydroxybutyrate) (PHB), a semicrystalline polymer that isfully biodegradable and biocompatible, is obtained from renewableresources. From a sustainability perspective, PHB offers manyattractive properties though it is more expensive to produce thanstandard...
- Q 1. An impartial judge of a local garden competition collectsscores from two groups of judges on what he suspects to be thenumber one garden. He finds the first group (n...
- Q 1a)Out of the 50 candidates in the question above, 28 are womenand 22 aremen. How many ways can the committee of 12 be randomly chosen where7 membersare women and 5...
- Q We consider a population of cars from a given model year. Asample of 24 such carshas been recently sold. The sale price as a function of the ageof the car...
- Q A researcher was interested in utilities provided by citygovernments. The researcher randomly selected 20 counties from alist of all counties in the U.S. From each of these counties theresearcher then...
- Q How would fast-food workers introduce bias into the manager'ssample of drive-thru times?
- Q show all work2) A semiconductor manufacturer produces printed circuitboards that are sampled to determine the thickness of their copperplating. The following statements create a data set named Trans,which contains the...
- Q 1. You want to obtain a sample toestimate how much parents spend on their kids birthday parties.Based on previous study, you believe the population standarddeviation is approximately ?=26.2?=26.2 dollars. You would...
- Q For MSE (mean square error), why is it important to toknow the parameters of the distribution of the sample values of theattributes used for the observations ? please provideexample and...
- Q What is significance good for? Which of the following questionsdoes a test of significance answer? Briefly explain your replies.(a)Is the sample or experiment properly designed? (b)Is theobserved effect due to...
- Q Time? (days)ImmediateTime? (days)ImmediateActivityamb?Predecessor(s)Activityamb?Predecessor(s)A555577long dash—H444466?E, FB112255long dash—I22771010?G, HC555555AJ224477ID44881313AK6610101313IE1110101717?B, CL226666JF115577DM222233KG226699DN77771212?L, MNumber of days that would result in? 99% probability ofcompletion?
- Q (9pt) A stock market analyst wants to determine if the recentintroduction of the IPhone 8x has changed the distribution ofshares in the cellphone market. The analyst collects data from arandom...
- Q The answer choices below represent different hypothesis tests.Which of the choices are left-tailed tests? Select all correctanswers. Select all that apply: H0:X=17.3, Ha:X?17.3 H0:X?19.7,Ha:X<19.7 H0:X?11.2, Ha:X<11.2 H0:X=13.2, Ha:X?13.2H0:X=17.8, Ha:X?17
- Q Given the following frequency distribution, the distributionis:ValueFrequency112233151016151720184019202010Answer: Which one it is?Normal.Positively skewed.Negatively skewed.Bimodal
- Q Two samples are taken with the following numbers of successesand sample sizesr1r1 = 25 r2r2 = 24n1n1 = 71 n2n2 = 67Find a 98% confidence interval, round answers to the...
- Q Three years ago you bought 200 shares of stock trading at $40per share. One year after you bought the stock, it paid a dividendof $2 per share, which you then...
- Q 8.3 Is the environment a major issue with Americans? To answerthat question, a researcher conducts a survey of 1255 randomlyselected Americans. Suppose 707 of the sampled people replied thatthe environment...
- Q Allen's hummingbird (Selasphorus sasin) has beenstudied by zoologist Bill Alther.† Suppose a small group of 18Allen's hummingbirds has been under study in Arizona. The averageweight for these birds is x...
- Q A store sells three different clothing designs and has recordedsales of each over five different 24-hour periods:DesignA DesignB Design C 16 33 23 18 31 27 19 37 21 17 29 28 13 34 25Use the Kruskal-Wallis H test and the...
- Q Suppose we have the following values on the number of customers(X) and the average profits (Y) for fifteen stores:Store Customers(X) Average Profits (Y)A 161 157B 99 93C 135 136D 120 123E 164 153F 221 241G 179 201H 204 206I 214 229J 101 135K 231 224L 206 195M 248 242N 107 115O 205 197Use the Spearman’s Rank Correlation test at the 0.05...
- Q An airline operates a call center to handle customer questionsand complaints. the airline monitors a sample of calls to helpensure that the service being offered is of high quality. Therandom...
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