Statistics question and answers for July 23, 2023
- Q On average, 36 babies are born in Vanderbilt Children’s Hospitalevery day.(a) Let X be the number of babies that will be born in Whovillein the next hour. What type of...
- Q An auditor for a government agency was assigned the task ofevaluating reimbursement for office visits to physicians paid byMedicare. The audit was conducted on a sample of 75 reimbursements,with the...
- Q #1)A sample of 12 joint specimens of a particular type gave asample mean proportional limit stress of 8.57 MPa and a samplestandard deviation of 0.78 MPa.(a) Calculate and interpret a...
- Q (a) The rent prices for a studio apartment in Dublin follows anormal distribution with mean 1315€ and standard deviation 147€. Apostdoctoral researcher working at Trinity is looking for a studioapartment....
- Q 1. A jar contains 100 gummy bears: 50 ordinary candies, and 50cannabis edibles. Of the ordinary candies, 40 are red and 10 aregreen. Of the cannabis edibles, 20 are red,...
- Q Inference - type 2 error3. A soda vending machine is scheduled to ship an average ofnine (9) ounces of soda per glass, with a standard deviation of oneounce (1) ounce....
- Q A simple random sample withn = 56provided a sample mean of 29.5 and a sample standard deviationof 4.4.A. Develop a 90% confidence interval for the populationmean.B. Develop a 95% confidence...
- Q In a study on the physical activity of people, researchersmeasured overall physical activity as the total number ofregistered movements (counts) over a period of time and thencomputed the number of...
- Q 4.) When would you use the normal distribution? T-distribution?Chi-Square distribution?
- Q 8) Errors: Type I and Type II are errors that are possible evenwhen a hypothesis test is done correctly. A hypothesis test isbased on probabilities (p-values) This means there is...
- Q Three independent group students took an exam. The datapresented below represent the students’ test scores.Group 1 Group 2 Group 395 79 6598 76 6880 60 7077 88 8799 69 6690...
- Q By hand solve the problem.The life in hours of a thermocoupleused in furnace is known to be approximately normally distributed,with standard deviation σ=15 hours . A randomsample of 15 thermo-couples...
- Q The Department of Navy has been downsizing and must find costsavings opportunities to meet mandated congressional budget cuts.One suggestion under consideration is to change the makeup of thecontent of Navy...
- Q a. The weight of 8 persons (in LB) are: 138,143,141, 139, 152,148, 160 and 267. Find the average weight using the suitable formof average. Give reason for your choice.b.126127156167189234302117134The above...
- Q The CEO of a company wants to estimate the percent of employeesthat use company computers to go on Facebook during work hours. Heselects a random sample of 200 of the...
- Q A realtor is interested to compare the average cost of a 3bedroom home in three different cities.  Prices from asample of homes in each city are collected and shown in...
- Q Hello:I am working on some homework problems for decision modeling.Here is the question: The weekly deman for a slow moving producthas the following probability mass function:Demand, x Probability f(x)0 0.21...
- Q An urn contains 7 red and 10 blue balls. If 4 balls are to berandomly selected without replacement, what is the probability thatthe first 2 selected are red and the...
- Q A waitress believes the distribution of her tips has a modelthat is slightly skewed to the left​, with a mean of ​$9.20 and astandard deviation of ​$5.80. She usually waits...
- Q In a study comparing banks in Germany and Great Britain, asample of 145 matched pairs of banks was formed. Each paircontained one bank from Germany an done from Great Britain....
- Q Alexandra Marcus, manager of the Sky Club Hotel, has requestedyour assistance on a queuing issue to improve the guest service atthe hotel. Alexandra Marcus is considering how to restructure thefront...
- Q Publisher is interested in the effects of sales of college textsthat include more than 100 data files. The Publisher plans toproduce 20 texts in the business area and randomly chooses...
- Q A company maintains three offices in a certain region, eachstaffed by two employees. Information concerning yearly salaries(1000s of dollars) is as follows:Office112233Employee123456Salary  26.7    30.6    27.2    30.6    22.8    26.7  (a) Suppose two of these employees are randomly selected...
- Q In posing the question “Do you believe in aliens?â€, 54% +5% ofthe men responded that they do while 33% +5% of women respondedthat they believe in aliens. a.for the Men:...
- Q What is the best description of a hypothesis test?Select one:a. A tool for comparing population parameters inferred fromsamplesb. Dissecting the datac. Help in solving problemsd. Breaking up the problemWhich hypothesis...
- Q A medical school claims that more than 28% of its students planto go into general practice. It is found that among a random sampleof 130 of the school's students, 33%...
- Q The weekly statistics about number of passengers (Y in 1000s)per week in terms of the number electric train cars (X) werecollected through 30 weeks. The data were collected to assess...
- Q An instructor has given a short quiz consisting of two parts.For a randomly selected student, let X = the number ofpoints earned on the first part and Y = the...
- Q There are two traffic lights on a commuter's route to and fromwork. Let X1 be the number of lights at whichthe commuter must stop on his way to work, andX2...
- Q Let X be the number of packages being mailed by arandomly selected customer at a certain shipping facility. Supposethe distribution of X is as follows.x1234p(x)0.10.40.20.3(a)Consider a random sample of size...
- Q A sample of 43 observations is selected from a normalpopulation. The sample mean is 60, and the population standarddeviation is 8. Conduct the following test of hypothesis using the0.02 significance...
- Q A scientist wants to determine whether or not the height ofcacti, in feet, in Africa is significantly higher than the heightof Mexican cacti. He selects random samples from both regions...
- Q Use 5% level of significance. At the fifth hockey game of theseason at a certain arena, 200 people were selected at random andasked as to how many of the previous...
- Q patient noagemarket encounterincubation periodhospitalization periodtotal infection timetime in ICUventilator requiredstatus after hospitalization149worker5,7476319910,437570716,18520265,69262998yesrecovered295customer7,6970955612,447773620,14486920noX384customer4,4315238215,952395120,38391893,12372819yesX462customer14,59760988,2761744822,87378433,05493266yesX556customer7,86356887,3972581415,26082696,90471671norecovered673customer5,4252443216,192217421,61746185yesX742worker3,784078186,091973889,876052070norecovered879customer7,6433626515,618498623,26186125,81350262yesX964customer10,074415613,927830124,00224570noX1068customer8,449604729,1403887517,58999355,60345425norecovered1142customer3,7646092712,75877916,52338830norecovered1261customer8,2940813215,696960923,99104235,52352788yesX1353worker8,052229667,9134286415,96565836,51075926yesrecoveredNOTE !!! : COULD YOU PLEASE ANSWER IT USING MINITAB (also withthe steps(procedure) you click in minitab)Is there a...
- Q Use a 5% significance level.In a large city,  200  persons were selectedat random and each person was asked how many tickets he purchasedthat week in the state lottery. The results are given...
- Q . Average coffee consumption among graduate students is commonlyknown to be 3.89 cups per day. A graduate student took a sample of10 fellow graduate students in her statistics class, and...
- Q Please describe the advantages and disadvantages of statisticalpackage SAS, SPSS, R, and EXCEL (for A4 one page amount)
- Q Trace metals in drinking water affect the flavor and anunusually high concentration can pose a health hazard. We obtainthe following data for 9 glasses of water. Each glass contained thesame...
- Q For each problem identify the sampling distribution explicitlyusing the Central Limit Theorem, use probability notation toindicate what you are being asked to find, find your probabilitiesshowing all your work, including...
- Q Time1.22.81.519.32.40.72.20.718.86.161.729.12.60.210.25.10.98.2Company A is trying to sell its website to Company B. As part ofthe sale, Company A claims that the average user of their sitestays on the site for 10...
- Q Garcia's Grill offers 8 side dishes, 4 types of steak, and 5toppings. How many different smothered steak dinners can be made ifa smothered steak dinner consists of the customer's choice...
- Q When I sit and watch my students takeexams, I often think to myself \"I wonder if students with brightcalculators are impacted by the pretty colors.\" This leads me towonder if...
- Q Lactation promotes a temporary loss of bone mass to provideadequate amounts of calcium for milk production. The paper “BoneMass Is Recovered from Lactation to Postweaning in AdolescentMothers with Low Calcium...
- Q The sum of deviations of observations around its mean is alwayszero. Explain this in detail with example?
- Q Please prepare a PowerPoint presentation of the followingcase.During the late 1980s, the decline in Akron’s tire industry,inflation, and changes in governmental priorities almost resultedin the permanent closing of the Akron...
- Q BMISubject ID #ChildChild’s Birth ParentChild’s Adoptive Parent11734192221922328223442419275232824619221972622298192418925212710192321Create a scatter plot between the children’s BMI and theiradoptive parents’ BMI. Format the plot into an APA-styled “figureâ€(see week 1 video for APA...
- Q Let x be a random variable that represents the pH ofarterial plasma (i.e., acidity of the blood). For healthy adults,the mean of the x distribution is μ = 7.4.†A...
- Q In a survey of a group of​ men, the heights in the​ 20-29 agegroup were normally​ distributed, with a mean of69.3 inches and a standard deviation of 2.0 inches. A...
- Q Since 2007, the American Psychological Association has supportedan annual nationwide survey to examine stress across the UnitedStates. A total of 360 Millennials (18- to 33-year-olds) were askedto indicate their average...
- Q We wish to test the hypothesis that μ≥0 at the 4% level using asample of 60 observations. The rejection regionfor this test is:Below -1.75Above 1.75Below -2.05Above 2.05
- Q Suppose the heights of 18-year-old men are approximatelynormally distributed, with mean 72 inches and standarddeviation 6 inches.(a) What is the probability that an 18-year-old man selected atrandom is between 71...
- Q Things to noteThe mean time it takes a man to run a mile is known to be 25minutes.A running company has developed a shoe that claim providesfaster times time. Scientists...
- Q Jeff is willing to invest $6,000 in buying shares and bonds of acompany to gain maximum returns. From his past experience, heestimates the relationship between returns and investments made inthis...
- Q What price do farmers get for their watermelon crops? In thethird week of July, a random sample of 41 farming regions gave asample mean of x = $6.88 per 100...
- Q Complete the following statements by typing youranswers in the spaces provided. If you are asked to determine theprobabilities, state your answers to 4 decimal places. If you areasked to determine...
- Q Reserve Problems Chapter 8 Section 2 Problem 2During the nutrition research, the amount of consumedkilocalories per day was measured for 18 people – 10 women and 8men. Results are as...
- Q Hypothesis testing, six steps. can you calculate. because thistopic wil be asked to me in the exam. which total marks 10.thanx
- Q In Caribbean seagrass meadows manatee grass Syringodiumfiliforme appears before turtle grass Thalassia testudinum. (a)Describe the design of an experiment to determine the mechanism ofthis successional sequence. (b) Give the statistical...
- Q Please provideDefinitions, some explanation along with example for eachtopic(Note: please provide all data in text format pdf/text so i cancopy into MsWord because i have to submit my assignment in...
- Q Question 2: The American Journal ofClinical Nutrition published the results of a study of the dietaryintake of sugar by children. In the trial a sample of 657 randomly selected American...
- Q A quality-consciousdisk manufacturer wishes to know the fraction of disks his companymakes which are defective.Step 2 of 2:Suppose a sample of1996 floppy disks is drawn. Of these disks, 319 were...
- Q QUESTION 1 Studd Enterprises sells big-screen televisions. A concern ofmanagement is the number of televisions sold each day. A recentstudy revealed the number of days that a given number oftelevisions...
- Q Use the research described below to answer the questions thatfollow. Shargorodsky, Curhan, Curhan, and Eavey (2010) examinedhearing loss data for participants from the National Health andNutrition Examination Survey (NHANES), aged...
- Q QUESTION 2Â Â According to Michael Theatre Ltd., the mean cost to run anightly theatre performance is $3,100 with a standard deviation of$440. Performance costs are known to follow a normalprobability...
- Q Paired Samples t-testGregg Popovich, head coach of the San Antonio Spurs, hadhis top five scorers practice during the past week with theshooting coach Chip Engelland. They shot 100 free throws...
- Q An engineer wanted to estimate the true mean resistance of acertain electrical circuits (?) by a sample mean (?Ì…). It is knownthat the population is normal, and the population standarddeviation...
- Q QUESTION 7In a study of 420,095 Danish cell phone users, 135 subjectsdeveloped cancer of the brain or nervous system (based on data fromthe Journal of the National Cancer Institute as...
- Q A survey was undertaken to estimatethe hours worked per week by volunteers in a social service agency.The agency provides telephone support 7 days a week for 12 hourseach day.There are...
- Q Chapter P, Section 1, Exercise 042PancakesA friend makes three pancakes for breakfast. One of the pancakes isburned on both sides, one is burned on only one side, and the otheris...
- Q theprobability that man has high blood pressure is 0.25 and If werandomly select 7 men. Find the probability that 2 men with highblood pressure. Also, find the expected number of...
- Q Ina sequence of independent flips of a fair coin thwr comes up headswith probability 0.6, what is the probability that there is a runof three consecutive heads within the first...
- Q Slices of pizza for a certain brand of pizza have a mass that isapproximately normally distributed with a mean of 67.3 grams and astandard deviation of 2.01 grams. a) For...
- Q A series of experiments was conducted to measure bubblediameter. Three characteristics x1, x2, and x3 were varied for eachexperiment. The data obtained are listed in the below table.Consider the multiple...
- Q 1. The amount of time a tire lasts is normally distributed witha mean of 30,000 km and standarddeviation of 2000 km.(a) 68% of all tires will last between ____________ km...
- Q To assess the accuracy of a laboratory scale, a standard weightknown to weigh 10 grams is weighed repeatedly. The scale readingsare normally distributed with unknown mean (this mean is 10...
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