Basic Math question and answers for September 28, 2023
- Q If data set A has a larger standard deviation than data set B,what would be different about their distributions?
- Q apply statistical methods and analysis. Unless otherwisestated, use 5% (.05) as your alpha level (cutoff for statisticalsignificance).Ice Cream Flavor Preference by GenderMenWomenMarginal Row TotalsVanilla151025Chocolate30535Marginal Column Totals451560 (Grand Total)The chi-square...
- Q These weekly exercises provide the opportunity for you tounderstand and apply statistical methods and analysis. Unlessotherwise stated, use 5% (.05) as your alpha level (cutoff forstatistical significance). #1. Which type...
- Q Glenn Howell, vice president of standard insurance staff, hasdeveloped a new training program fully adaptable to the pace ofusers. new employees work in several stages at their own pace ofwork;...
- Q Question 7The following lists of data represent five separate departments'technicians overtime for a week. Which has the smallest standarddeviation?Select the correct answer below:a)28, 26, 20, 17, 21, 29, 28, 28,...
- Q How do I do independent t test on the data set belowand how do I know if its pooled t test or unrolled t test?Health question for reference: to what extend...
- Q 7. A certain sports car model has a 0.07 probability ofdefective steering and a 0.11 probability of defective brakes.Erich S -E just purchased one of the models. If the two...
- Q Consider the following heart disease mortality data from twohypothetical countries, including a low-income and high-incomecountry.Age Group (years% of population in age groupDeath rate from heart diseaseHypothetical Low-Income0-2030%2/100,000 person- years21-5040%20/100,000 person-...
- Q Imagine that you are purchasing small lots of manufacturedproduct. If it is very costly to test a single item, it may bedesirable to test a sample of items from the...
- Q Type or paste question hereax+by+c=0.ax+by+c=0.Let (s?,t?)(s?,t?) be the reflection of the point (s,t)(s,t) in??. Find a formula that computes the coordinates of (s?,t?)(s?,t?)if one knows the numbers s,t,a,bs,t,a,b and cc....
- Q Question 2: Use the following informationto complete Exercises 3 – 5: A political scientist took a poolof the political attitudes of the students in one of his classes.Students were asked...
- Q An urn contains 6 red balls and 4 green balls. Three balls arechosen randomly from the urn, without replacement.(a) What is the probability that all three balls are red? (Roundyour...
- Q NCAA rules require the circumference of a softball to be 12 ±0.125 inches. A softball manufacturer bidding on an NCAA contractis shown to meet the requirements for mean circumference. Supposethat...
- Q The number of victories (W), earned run average (ERA), runsscored (R), batting average (AVG), and on-base percentage (OBP) foreach team in the American League in the 2012 season are provided...
- Q What proportion of college students plan to major in Business?You survey a random sample of 250 first-year college students, andyou find that 57 of these students indicate they plan to...
- Q The toco toucan, the largest member of the toucan family,possesses the largest beak relative to body size of all birds. Thisexaggerated feature has received various interpretations, such asbeing a refined...
- Q 1. Suppose that X is a Geometric r.v. and its pmf isf(x; p) = p(1 ? p) x?1 , x = 1, 2, . . . and 0 ? p...
- Q A burger place offers its burgers with the choice of one, two,or three meat patties. Customers may add any (as many or none asthey choose)of the following condiments: ketchup, mustard,...
- Q A grocery bag can be classified as either paper or plastic .Suppose that 92 ?% of grocery bags are classified as plastic . ?(a)Two grocery bags are chosen at random....
- Q Given two independent random samples with the following results:n1=15x?1=125s1=26 n 1 =15 x ? 1 =125 s 1 =26 ???n2=11x?2=159s2=23 n2 =11 x ? 2 =159 s 2 =23 Use...
- Q Let’s assume you have a bag of balls (5 red and 5 black). Youroll a six-sided dice and then select a ball from the bag.What is the probability you roll...
- Q What logical or ethical problems do you see in thesehypothetical scenarios?a. Dolon Privacy Consultants concludes that its employees arenot loyal because a few samples of employee e-mails containedcomments critical of...
- Q Let X and Y be random variables with means µX and µY . Thecovariance of X and Y is given by, Cov(X, Y ) = E[(X ? µX)(Y ? µY)]a)...
- Q Consider the following observations on shear strength (MPa) of ajoint bonded in a particular manner. 22.6 40.4 16.4 73.8 36.6 109.2 30.0 4.4 33.1 66.7 81.5c)How large or small does an observation have to be to qualifyas an outlier? (Round your...
- 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 Question text7-stepHypothesis Testing ProblemComplete the 7steps in Excel and upload the file hereTwo major automobilemanufacturers have produced compact cars with the same sizeengines.We are interested in determining whether or not...
- Q 12.26? Does haptic feedback improveperformance?A group of technology students is interested in whether hapticfeedback (forces and vibrations applied through a joystick) ishelpful in navigating a simulated game environment they created....
- Q 4. Identify situations where open-ended questions are moreappropriate than closed-ended questions. Think about the advantageof using closed-ended questions over open-ended questions?
- Q USING EXCEL For the most part,our multiple-choice quiz (and Evaluation) questions have fourpossible answers. (Yes, I know. I throw in an extra answer now andthen!) Suppose you come to a...
- Q 3. What are the advantages and disadvantages in usingproportional stratified sampling and disproportional stratifiedsampling?
- Q EmployeesAgeSalaryMary2328.6Frieda3153.3Alicia4473.8Tom2226.0Gillian2534.3Bob5463.5Vivian5196.4Cacil60122.9Barry4063.8Jaime64111.1Wanda3482.5Sam6380.4Saundra4069.3Pete3152.8steve2854.0Juan3658.7Dave5872.3Lee5288.6Judd4360.2Sunil2861.0Marcia5475.8Ellen4479.8Iggy3670.2Can we conclude that employee age helps in predicting averageemployee salary? Follow the 7 steps for hypothesis testing. (10points)Find the sample regression equation and interpret thecoefficients. Remember your interpretations should...
- Q I am creating SAS code, but am receiving an errors "ERROR: Value is out of range or inappropriate.ERROR: No body file. HTML5(WEB) output will not be created."This is the code:option...
- Q Construct a histogramof your empirical data using eight bars and then five bars. Forconsistency's sake, for eight bars use the class width of 0.125.So, your first bar will be 0.000-0.124,...
- Q A rural county hospital offers several health services. Thehospital administrators conducted a poll to determine whether theresidents’ satisfaction with the available services depends ontheir gender. A random sample of 1000...
- Q Dr. Patel is concerned about the long wait times in his office.The following table presents six random observations for thepatient waiting times over a period of 10 days.Observations (mins)Day123456130171821193321711333339113192540173813429312925222151534261414186811293339177242426372820814332316401392718301120171037351238298Dr. Patel...
- Q A random sample of 15 chemists from Washington state shows anaverage salary of $46613 with a standard deviation of $775. Arandom sample of 24 chemists from Florida state shows an...
- Q Suppose that there are 100 students entering the Master’s ofBusiness Administration program. Of these students, 20 have twoyears of work experience, 30 have three years of work experience,15 have four...
- Q Consider the following time series data:Month1234567Value25122011202315(a)Compute MSE using the most recent value as the forecast for thenext period.If required, round your answer to one decimal place.What is the forecast for...
- Q HIV-related deaths and mid-year population by age group inCountry Y in 2003 are given belowAge group (years)HIV-related deathsMid-year populationAge specific HIV related death rate (per 100,000population)0-433633,600,0005-148762,400,00015-2449938,400,00025-34445438,400,00035-44336024,000,00045-54151619,200,00055+50424,000,000Total10756240,000,0004.5(d) Calculate the age-specific HIV-related...
- Q A city council suspects a judge of being a "hanging judge"because s/he is perceived as imposing harsher penalties for thesame sentence. To investigate this, a random sample of 45 cases...
- Q 1.Which of the following scenarios would it be appropriate touse a normal approximation for the sampling distribution of thesample proportion?Select one:a.) A researcher wishes to find the probability that more...
- Q I am trying to find anappropriate statistical test to run for a research study usingsomeone else's gathered data (so that no IRB process is needed). Intheir data they present:Likelihood of...
- Q Twenty-nine percent of primary care doctors think their patientsreceive unnecessary medical care. If required, round your answer tofour decimal places. (a) Suppose a sample of 300 primary caredoctors was taken....
- Q 5. The probability of a "Yes" outcome for a particular binary(yes/no) event is 0.1. For a sample of n=1000 such events, let X bethe number of "Yes" outcomes. Use the...
- Q Define the data you ( Any Date set could be used ) want to studyin order to solve a problem or meet an objective:Find a data-set and analyse it for...
- Q High in the Rocky Mountains, a biology research team has draineda lake to get rid of all fish. After the lake was refilled, theystocked it with an endangered species of...
- Q A computer chip manufacturer finds that, historically, for ever100 chips produced, 85 meet specifications, 10 need reworking, and5 need to be discarded. Ten chips are chosen for inspection. A)What is...
- Q The heights of adult men in America are normally distributed,with a mean of 69.5 inches and a standard deviation of 2.68 inches.The heights of adult women in America are also...
- Q Assume that the number of new visitors to a website in one houris distributed as a Poisson variable with ? = 4.0. What is theprobability in any given hour that...
- Q One genetic disease was tested positive in both parents of onefamily. It has been known that any child in this family has a 25%risk of inheriting this disease. A family...
- Q A real estate agent (Sue Bays Realty) wants tot study therelationship between the size of a house and its selling price. Thetable below presents the size in square feet and...
- Q One month before the election, a poll of 670 randomly selectedvoters showed 348 planning to vote for a certain candidate. A weeklater it became known that he had had an...
- Q Classes (Percentage)No of Students0 < 101010 < 202020 < 302530 < 401540 < 502050 < 603560 < 704570 < 801080 < 901590 < 10052.1 Determine the:2.1.1 Mean number of marks...
- Q What is the value of research in your everyday life and when youare completing a graduate degree?
- Q Summarize the different approach in school safety suchas metal detectors arm guard and 0 tolerance Policies
- Q All work must be done in R programing. Consider this datasetprovided to you as prob10.txt c1 t1 c2 t2 c3 t3 c4 t4 2650 31152619 2933 2331 2799 2750 3200...
- Q To investigate an alleged unfair trade practice, the FederalTrade Commission (FTC) takes a random sample of sixteen “5- ounce”candy bars from a large shipment. The mean of the sample weights...
- Q discuss the interface of mathematics/statistics, computerscience and other disciplines focusing on people, events andideas
- Q A worker has asked her supervisor for a confidentialletter of recommendation for a new job. She estimates that there isan 80% chance that she will get the job if...
- 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 ? = 6150...
- Q What is the age distribution of patients who make office visitsto a doctor or nurse? The following table is based on informationtaken from a medical journal.Agegroup, yearsUnder 1515-2425-4445-6465 and olderPercent...
- Q What is the relationship between transportation models and moregeneral logistics models? Explain how these two types of linearoptimization models are similar and how they are different.
- Q Trevor is interested in purchasing the local hardware/sportinggoods store in the small town of Dove Creek, Montana. Afterexamining accounting records for the past several years, he foundthat the store has...
- Q Generate 1000 random numbers from a normal distribution withmean 1 and variance 2 using Box?Muller transformation in R.
- Q The following table shows the annual returns (in percent) andsummary measures for a sample of returns from the Vanguard EnergyFund and the Vanguard Health Care Fund from 2012 through 2016.YearEnergy...
- Q In a political science class there are 15 political sciencemajors and 9 non-political science majors. 4 students are randomlyselected to present a topic. What is the probability that at least2...
- Q Give the expected value, variance, and probability distributionfor the sum of a fair coin and a random real number chosenuniformly in the range [ -1, 1]. Sketch the PMF.
- Q In the binomial function, negative binomial function, poissondistribution, I dont know what to do when we need to find avariable X. For example, If X is exactly at 0, 1...
- Q QUESTION 1Which of the following statements is TRUE?a.The average amount of safety stock depends on the size of ordersplaced with the supplier.b.The average amount of safety stock depends on the...
- Q Patient satisfaction. Scores derived from a patient satisfactionsurvey are Normally distributed with ? = 50 and ? = 7.5, with highscores indicating high satisfaction. An SRS of n= 36 is...
- Q Running times (Y) and maximal aerobic capacity (X) for 14femaleRunners. Data collected for running times and maximal aerobiccapacity are listedbelowX: 61.32 55.29 52.83 57.94 53.31 51.32 52.18 52.37 57.91 53.9347.88...
- Q A bias coin has the probability 2/3 of turning up heads. Thecoin is thrown 4 times.(a) What is the probability that the total number of heads shown is3?(b) Suppose that...
- Q Alice and Bob are supposed to meet in the cafeteria. Alicearrives at a random time betweennoon and 1pm, and wait for 15 minutes upon her arrival and thenleaves. Bob also...
- Q Assume the resting heart rates for a sample of individuals arenormally distributed with a mean of 85 and a standard deviation of20. Use the? 68-95-99.7 rule to find the following...
- Q We have to randomly select 2 students for an award from a groupof 5 equally deserving students. Of the five students two arefemale and three are male.Event C as selecting...
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!