Basic Math question and answers for August 22, 2023
- Q A marketing firm wants to know how strongly Cuyahoga Countyresidents support building a new stadium for the local nationalfootball league team, the Cleveland Browns. They get a completelist of all...
- 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+b1xy^=b0+b1x, for predicting a woman's bonedensity based on...
- Q Write down a brief report of the results from this regressionanalysis explaining: (1) what is the impact of each variable overthe demand? (2) How strong are the results from this...
- Q The weight of an organ in adult males has a​ bell-shapeddistribution with a mean of 310 grams and a standard deviation of20 grams. Use the empirical rule to determine the...
- Q Question 3 options:The economic dynamism, which is the index of productive growth(in dollars), for countries that are designated by the World Bankas middle-income are in following table (\"SOCR data 2008,\"2013).Table:...
- Q 2. An automatic welding machine is being considered for use ina production process. It will be considered for purchase if it issuccessful on 99% of its welds. Otherwise, it will...
- Q Consider an earnings function with the dependent variable ymonthly usual earnings and as independent variables years ofeducation x1, gender x2 coded as 1 if female and 0 if male, andwork...
- Q Find the following:A) 5! =B) 7C2 =C) 7P2 =
- Q Recently, ESPN reported that the average salary of an NFLplace-kicker is $1.9 million, while the average salary for an NFLrunning back is only $1.7 million. This statistic was cited asevidence...
- Q Tell how you currently use statistics at a bank. Bedescriptive in 250 words or more. Please typed answers only.
- Q 1. A coin is tossed 100 times, each resulting in a tail (T) or ahead (H). If a coin results in a head, Roy have to pay Slim 500$.If the...
- Q For this problem, carry at least four digits after the decimalin your calculations. Answers may vary slightly due torounding.In a random sample of 67 professional actors, it was found that...
- Q Smitley and Davis studied the changes in gypsy moth egg massdensity over one generation as a function of the initial egg massdensity in a control plot and two treated plots....
- Q A researcher has collected the blood samples of 30 individualsand found that the mean hemoglobin concentration for the sample ofindividuals is 13.9 grams per deciliter and the standard deviationis 1.43...
- Q The following contingency table shows the number of two-bedroomapartments grouped by monthly rent and location.MonthlyRent                      York     Lancaster     Dover            Total$600 to under$700             6          15                    9                     30$700 to under$800             30                  21                   24                    75$800 to under$900             15                  18                    12                      45Total  51                   54                   45                     150The probability that...
- Q Which of the following statements are TRUE?Note that there may be more than one correct answer; select allthat are true.There are countably infinite values of X in a continuous uniformdistribution.For...
- Q In a recent year, about two-thirds of U.S. households purchasedground coffee. Consider the annual ground coffee expenditures forhouseholds purchasing ground coffee, assuming that theseexpenditures are approximately distributed as a normal...
- Q Explain the difference between two independent samples and twodependent samples.Provide examples of each type of pairs of samples.Compare and contrast the hypothesis testing process of twoindependent and two dependent samples....
- Q The mortality rate from disease X in city A is 75/100,000 inpersons 65 to 69 years old. The mortality rate from the samedisease in city B is 150/100,000in persons 65-69...
- Q Gregor Mendel established the concept of dominant and recessivegenes and characteristics. According to Mendel’s law when crossingtwo inbred lines, 75% of the offspring should show dominant and 25%recessive characteristics. In...
- Q As a shift manager at a local fast food place, you areresponsible for ensuring quality control. You do not want to weighall the frozen hamburger patties that get delivered by...
- Q What is the difference between a Paired t-test and a Pooledt-test?
- Q Give a scientific method, procedure or ways to determine thestatistics in order to investigate, or analyze the characteristicand behaviour of electric-powered two and three wheelers in termsof the factors such...
- Q Jobs and productivity! How do retail stores rate? One way toanswer this question is to examine annual profits per employee. Thefollowing data give annual profits per employee (in units of...
- Q Identify the independent and dependent variable:question 1: a study was conducted to determine whether when arestaurant server drew a happy face on the check, that wouldincrease the amount of tip.question...
- Q An urn contains n white balls and m black balls. ( m and n areboth positive numbers.)(a) If two balls are drawn without replacement , what is theprobability that both...
- Q 1. (a) A statistician randomly sampled 100observations and found= 106 and s = 35. Calculate the t-statisticand p-value for testingH0: μ = 100 vsHA: μ > 100.Carry out the test...
- Q You are opening a doughnut franchise, but first, you must passquality control on sugar glaze thickness before you can open. Yourandomly select 10 doughnuts from your production and send thefollowing...
- Q Your job is to fully staff your facility at the lowest cost. Thefacility must have at least 2 people w working from 6am-8pm Mondaythru Friday and at least 1 person...
- Q 2. Explain why depression is a hypothetical construct instead ofa concrete variable. Describe how depression might be measured anddefined using an operational definition. TIP: The more details youprovide for the...
- Q The mean cost of domestic airfares in the United States rose toan all-time high of $400 per ticket. Airfares were based on thetotal ticket value, which consisted of the price...
- Q Evaluate the differences between dependent and independentsamples. Would our random samples need to come from the same\"overall\" population?
- Q Corporate advertising tries to enhance the image of thecorporation. A study compared two ads from two sources, the WallStreet Journal and the National Enquirer. Subjects were asked topretend that their...
- Q The landing of military fighter jets on aircraft carrierrequires great skill, so on occasions it requires more than oneattempt to achieve the landing. TOP GUN is a pilot who is...
- Q A supermarket chain analyzed data on sales of aparticular brand of snack crackerat 104 stores for a certain one week period. The analystdecided to build a regresion model to predict...
- Q Hypothetical Human population matrix over a period of time of 20year intervals.Age 0-20 20-40 40-60 60-80 Â Â 0-20 [ .24 .98 0 0]20-40 [ .77 0 .92 0]40-60 [ .04 0...
- Q The number of chocolate chips in a bag of chocolate chip cookiesis approximately normally distributed with a mean of 1262 chips anda standard deviation of 118 chips.​(a) Determine the 27th...
- Q consider the following numbers: -5,-3,-1,1,3. assuming thatthese numbers are the sample data, use a pencil and calculator tocalculate the mean, standard deviation and variance. please showwork
- Q There is one 1$ bill and one 5$ bill in your left pocket andthree 1$ bills in your right pocket. You move one bill from theleft pocket to the right...
- Q Each front tire on a particular type of vehicle is supposed tobe filled to a pressure of 26 psi. Suppose the actual air pressurein each tire is a random variable....
- Q Listed below are systolic blood pressure measurements​ (in mm​Hg) obtained from the same woman. Find the regression​ equation,letting the right arm blood pressure be the predictor​ (x)variable. Find the best...
- Q Problem 3-31 (Algorithmic)Gulf Coast Electronics is ready to award contracts to suppliersfor providing reservoir capacitors for use in its electronicdevices. For the past several years, Gulf Coast Electronics hasrelied on...
- Q Data from adoption studies on handedness indicate that theeffects of shared biological heritage are more powerfuldeterminants of hand preference than sociocultural factors.Biological offspring were found to show nonrandom distributions ofright...
- Q Howto do the monte carlo method on a calculator? step by stepmethod.
- 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 juryawarded about $3.5 million for pain...
- Q What is the difference between weighted mean and regular mean inmath?
- Q Running times (Y) and maximal aerobic capacity (X) for 14femaleRunners. Data collected for running times and maximal aerobiccapacity are listed belowX: 61.32 55.29 52.83 57.94 53.31 51.32 52.18 52.37 57.91...
- Q A process has mean 11 and standard deviation 2.5. The process ismonitored by taking samples of size 5 at regular intervals. Theprocess is declared to be out of control if...
- Q The Pew Research Center Internet Project conducted a survey of907 Internet users. This survey provided a variety of statistics onthem.If required, round your answers to four decimal places.(a)The sample survey...
- Q The mean incubation time of fertilized eggs is 22 days. Supposethe incubation times are approximately normally distributed with astandard deviation of 1 day.(a) The incubation times that make up the...
- Q Let x be a random variable that represents white bloodcell count per cubic milliliter of whole blood. Assume thatx has a distribution that is approximately normal, withmean μ = 6300...
- Q Take a stick of unit length and break it into three pieces,choosing the break point at random. (The break points are assumedto be chosen simultaneously). What is the probability that...
- Q Test the claim that the proportion of men who own cats is largerthan 20% at the .05 significance level.The null and alternative hypothesis would be:H0:p=0.2H0:p=0.2H1:p≠0.2H1:p≠0.2H0:p=0.2H0:p=0.2H1:p>0.2H1:p>0.2H0:μ=0.2H0:μ=0.2H1:μ≠0.2H1:μ≠0.2H0:μ=0.2H0:μ=0.2H1:μ<0.2H1:μ<0.2H0:p=0.2H0:p=0.2H1:p<0.2H1:p<0.2H0:μ=0.2H0:μ=0.2H1:μ>0.2H1:μ>0.2The test is:right-tailedtwo-tailedleft-tailedBased on a sample...
- Q Discuss appropriate data representations
- Q For 300 trading​ days, the daily closing price of a stock​ (in$) is well modeled by a Normal model with mean ​$197.49197.49 andstandard deviation ​$7.147.14. According to this​ model, what...
- Q A psychologist wants to know whether wives and husbands who bothserve in a foreign war have similar levels of satisfaction in theirmarriage. To test this, six married couples currently serving...
- Q Suppose that Y has the gamma distribution with parameters a (shape ) = 2 and b (scale) = 2. Use R to plot the probabilitydensity, and determine the shape or...
- Q Loss,x1,x2372,45,162206,55,233175,61,232154,66,231136,71,231112,71,23755,81,22445,86,219221,53,203166,60,189164,64,210113,68,21082,79,19632,81,180228,56,200196,68,173128,75,18897,83,16164,88,119249,59,161219,71,151186,80,165155,82,151114,89,128341,51,161340,59,146283,65,148267,74,144215,81,134148,86,127Need the code and comment in R-studio, and please explain it,thanks!Q5.Use your model to obtain the mean abrasion loss for rubber withhardness 71 an tensile strength 201. Round your answer...
- Q 1.When students apply for graduate studies (i.e. at the master’sor doctoral level), they arerequired to submit an official copy of their transcript, maileddirectly from the Registrar’sOffice at their academic institution....
- Q In the EAI sampling problem, the population mean is $51,200 andthe population standard deviation is $5,000. When the sample sizeis n=30, there is a 0.4908 probability of obtaining a sample...
- Q A meat-processing company in Alberta produces and markets apackage of eight small sausage sandwiches. The product isnationally distributed, and the company is interested in knowingthe average retail price charged across...
- Q Loss,x1,x2372,45,162206,55,233175,61,232154,66,231136,71,231112,71,23755,81,22445,86,219221,53,203166,60,189164,64,210113,68,21082,79,19632,81,180228,56,200196,68,173128,75,18897,83,16164,88,119249,59,161219,71,151186,80,165155,82,151114,89,128341,51,161340,59,146283,65,148267,74,144215,81,134148,86,127I am asking the R studio Code, pleas leave your code and commenthere, thanks a lot!Q1.The data file abrasion contains the resultsfrom a small scale study (Davies, O.L. and Goldsmith,...
- Q Discussion: Central Tendency and Variability Understandingdescriptive statistics and their variability is a fundamentalaspect of statistical analysis. On their own, descriptivestatistics tell us how frequently an observation occurs, what isconsidered “averageâ€,...
- Q You may need to use the appropriate technology to answer thisquestion.A standardized exam consists of three parts: math, writing, andcritical reading. Sample data showing the math and writing scoresfor a...
- Q When summarizing scale variable data using descriptivestatistics, what do we lose in our understanding of a sample if wejust report the mean and not any measures of dispersion like rangeor...
- Q 1) How many different ways can you arrange the letters in thewordsa) “friendsâ€b) “initialâ€c) “probabilityâ€Show your calculations.
- Q A Physics teacher takes a random sample of size 5 from hisstudents. Their marks in a written test (x)and a practical test (y) are given in the following table.StudentABCDEX1114161215Y912141315(i) Find...
- Q Directions: Create a PowerPoint withpresenter’s notes describing your research project. A minimum of 10slides is required, including a title and References slide. Thepresentation should address the following:Describe the techniques and...
- Q Problem 1)Try creating 100 normally disributed random numbers with anaverage of 10 and standard deviation of 1. How close is the averageto 10? How close is the standard deviation to...
- Q Film Analysis: \"Inequality For All\"Present a sociological analysis of the documentarywatched in class. In your analysis, apply the followingsociological theories and relevant concepts such as:- Functionalist, conflict, andinteractionist theories' approach...
- Q 1.Given the following sampling distribution:X-18-13-21019P(X)1â„259â„1007â„1002â„25___What is P(X = 19)2. Given the following sampling distribution:X-20-11-71214P(X)1â„253â„1009â„1001â„50___What is P(X > -11)?3.Given the following sampling distribution:X-19-14-3515P(X)1â„259â„1007â„1002â„25___What is the mean of this sampling distribution?
- Q 2. Non-Local StringsFor this question, a block is a sequence of 20characters, where each character is one of the 26 lowercase lettersa-z. For example, these are blocks:iwpiybhunrplsovrowytrpulxfsqrixjhrtjmcrrfxfpwdhwgxtdaqtmxmlfHow many different blocks...
- Q Jarrid Medical, Inc., is developing a compact machine for kidneydialysis, but the company's chief engineer, Mike Crowe, has troublecontrolling the variability of how quickly the fluid moves throughthe device Medical...
- 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 There are two suppliers of aluminum extrusions competing foryour business. You are motivated to have extrusions with good (i.e.high) yield strength and low variance. Each supplier provides youthe following yield...
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