Basic Math question and answers for October 08, 2023
- Q A group of 1000 students wrote an entrance exam for theUniversity of Statistics. The mean score was 62 with a standarddeviation of 12. Assuming a Normal Distribution, answer thefollowing questions:What...
- Q The data below are from a study conducted by a consumer researchgroup on the fuel efficiency (rated based on city miles per gallon)of the 30 top-selling U.S. automobiles.23 20 16...
- Q Applications of Statistical Process Control and QualityImprovement Tools in Transactional andService Business.The tools are:1. Cause and Effect Analysis.2. Check sheets/ tally sheets.3. Graphs.4. Histograms.5. Pareto analysis.6. Scatter analysis.7. Control charts.....
- Q A hand of 13 cards is dealt from a standard deck of 52 playingcards. What is the probability that it contains more spades (?)than hearts (?) given that the hand...
- Q In the last quarter of? 2007, a group of 64 mutual funds had amean return of 1.9?% with a standard deviation of 6.3?%. Considerthe Normal model ?N(0.019?,0.063?) for the returns...
- Q What is the Central Limit Theorem? Discuss an example of itsapplication.
- Q ANSWER USING R CODEUsing the dataset 'LakeHuron' which is a built in R datasetdescribing the level in feet of Lake Huron from 1872- 1972. Toassign the values into an ordinary...
- Q A 2007 Carnegie Mellon University study reported that onlineshoppers were willing to pay, on average, more than an extra $0.60on a $15 purchase in order to have better online privacyprotection.A...
- Q The average income of 15 families who reside in a largemetropolitan East Coast city is $62,456. The standard deviation is$9652. The average income of 11 families who reside in a...
- Q Consider a senior Statistics concentrator with a packedextracurricular schedule, taking five classes, and writing athesis. Each time she takes an exam, she either scores very well (aleast two standard deviations...
- Q How to make a declie plot by using SAS?
- Q A company has a policy of retiring company cars; this policylooks at number of miles driven, purpose of trips, style of car andother features. The distribution of the number of...
- Q Standardized stock price indicators in three different countriesover a week are listed below. An analyst is interested in knowingif the stock markets of these different countries are dependent onone another....
- Q In the week before and the week after a? holiday, there were10 comma 00010,000total? deaths, and49834983of them occurred in the week before the holiday.a. Construct a9090?%confidence interval estimate of the...
- Q Professor X travels from Houston to Istanbul with stop overs inNew York and Londa. At each stop he luggage is transferred from oneplane to another. In each airport, including Houston,...
- Q The null and alternate hypotheses are:H0 : ?1 =?2H1 : ?1 ??2A random sample of 9 observations from one population revealed asample mean of 24 and a sample standard deviation...
- Q Identify the population, variables, types of variables, type ofsampling plan used, and any potential sources of bias in thefollowing situation. Researchers spend one Saturday night waitingoutside of a bar to...
- Q Howcan I know when I should use line graph, histogram, andsteam-leaves? Is that gonna be mansioned in the text or I have toknow by myself?
- Q A girl is concerned she might have a disease that affects 1%of the population. Luckily, a drug-store test is available. Thetest has a false-positive rate of 3% and a false-negative...
- Q What new Big Data trends in the field of sports do you thinkwill impact the sport and audiences the most? why?
- Q Plug-in estimates: Unbiased estimates are not transformationinvariant, Show that:a.) In N(?, ?2), x?2 is not an unbiasedestimate of ?2b.) In Exponential(?), e^(-x? ) is not an unbiased estimate of?.c.) In...
- Q Annual revenues are used to predict the value of a baseballfranchise. A sample of 32 franchises was used. An analysis ofvariance of these data showed that b1= 5.0785 and Sb1...
- Q A researcher conducts a study of white and black attitudestoward the police in her community.The percentage of a random sample of white respondents (N = 200)who say they have a...
- Q In 2014, a group of students was interested in investigatingprices of rental accommodation in suburbs of Brisbane that areclose to the CBD and collected information on a total of 200randomly...
- Q A? gender-selection technique is designed to increase thelikelihood that a baby will be a girl. In the results of the?gender-selection technique,861861births consisted of443443baby girls and418418baby boys. In analyzing these? results,...
- Q You are testing the null hypothesis that there is no linearrelationship between two? variables, X and Y. From your sample ofn=18, you determine that b1=4.4 and Sb1=1.3a. What is the...
- Q For high risk group screening (i.e. injection drug users) ascompared to generla population screening, what is the best in termsof levels of sensitivity and specificity. Explain why.
- Q Calculate ??/2 for each of the following. Illustrate youranswers with graphs.a. ? = 0.10b. ? = 0.01c. ? = 0.05d. ? = 0.20
- Q A statistics teacher wants to see if there is any difference inthe abilities of students enrolled in statistics today and thoseenrolled five years ago. A sample of final examination scores...
- Q A distribution and the observed frequencies of the values of avariable from a simple random sample of the population are providedbelow. Use the? chi-square goodness-of-fit test to? decide, at thespecified...
- Q What other descriptive data would be useful for providing cluesas to the causes of female breast cancer?
- Q In a multiple linear regression model with 2 predictors(X1andX2), TRUE or FALSEIn a multiple linear regression model with 2 predictors(X1and X2), thenSSR(X1)+SSR(X2|X1) =SSTO–SSE(X1,X2) TRUE or FALSEIn a multiple linear regression model with 2 predictors(X1and X2), if...
- Q how do I copy my word data to excelI typed my report on word document and would like tocopy them on excel 2013 in other to add table and graph
- Q Please give an explanation as well. Thanks.What is the number of permutations ? of {1, . . . , n} so thatthere is no triple i < j < k...
- Q Questions 1-5 are based on the following Let X be a normallydistributed random variable. A random sample of size n = 9 yieldsthe following data: x 98 93 61 75...
- Q Short answerA. What are two tests that are used to check for equal variancein two samples?B. Why can we not simply use multiple t-tests to determine ifthere is a difference...
- Q Find a b c of a right triangle. with a perimeter of 18.
- Q [2 pts] Narrow confidence intervals give us more preciseestimates of our parameter. What two quantities does the researchercontrol that affect the width of a confidence interval, and how canthe researcher...
- Q We must show our work.1. A sample of 81 observations is taken from a normalpopulation with a standard deviation of 5. The sample meanis 40. Determine the 80% confidence interval...
- Q An experiment is picking a card from a fair deck. a.) What isthe probability of picking a Jack given that the card is a facecard? b.) What is the probability...
- Q A noted psychic was tested for extrasensory perception. Thepsychic was presented with 200 cards face down and asked todetermine if each card were one of five symbols: a star, a...
- Q The president of Amalgamated Retailers International, SamPeterson, has asked for your assistance in studying the marketpenetration for the company’s new cell phone. You are asked todetermine if the market share...
- Q 7. CircusA traveling circus has found that its average attendance perperformance is 6000 people with astandard deviation of 1500. Assume that attendance is normallydistributed.a)Suppose that a town asks the circus...
- Q Census data for a city indicate that 29.0?% of the? under-18population is? white, 26.2?% ?black, 33.2?% Latino, 9.5?% ?Asian,and 2.1?% other ethnicities. The city points out that of 25,577police? officers,...
- Q According to actuarial tables, life spans in the United Statesare approximately normally distributed with a mean of about 75years and a standard deviation of about 16 years.1) Find the probability...
- Q theme park owner wants to know if the children’s rides arefavoring 10 year old girls over 10 year old boys based on height.In other words, does one group taller than...
- Q We must show our work6. Pharmaceutical companies promote their prescription drugsusing television advertising. In a survey of 90 randomly sampledtelevision viewers, 18 indicated that they asked their physicianabout using a...
- Q Leisure Air, a regional airline, provides service forPittsburgh, Newark, Charlotte, Myrtle Beach, and Orlando. LeisureAir has two Boeing 737-400 airplanes, one based in Pittsburgh andthe other in Newark. Both airplanes...
- Q The Digest of Education Statistics reported that the meansalary for teach- ers in 2012 was $56,410. Suppose that the samplesize was 87 and that the sample standard deviation was $15,000(note...
- Q Assume that a sample is used to estimate a population proportionp. Find the 95% confidence interval for a sample of size 243 with27.2% successes. Enter your answer as a tri-linear...
- Q The average annual rainfall in City A is 20 inches, with astandard deviation of 3 inches. The annual rainfall in City B is 45inches, with a standard deviation of 12...
- Q A trucking company determined that the distance traveled pertruck per year is normally? distributed, with a mean of 70 thousandmiles and a standard deviation of 12 thousand miles. Completeparts? (a)...
- Q We have a class of 10 students who all spent different amountsof time studying for a quiz. The number of minutes each studentstudied is listed in the table below. Calculate...
- Q The accompanying data represent the total travel tax? (indollars) for a? 3-day business trip in 8 randomly selected cities.A normal probability plot suggests the data could come from apopulation that...
- Q In a clinic, a random sample of 60 patients is obtained, andeach person’s red blood cellcount (in cells per microliter) is measured. The sample mean is5.28. The populationstandard deviation for...
- Q Please only show me the graphs I know the answers to belowproblems. I don't know how to do the graphs correctly.1. A radar unit is used to measure speeds of...
- Q How does anti smoking messages inpack the populationoff today
- Q You are manager of a ticket agency that sells concert tickets.You assume that people will call 4 times in an attempt to buytickets and then give up. Each telephone ticket...
- Q 4. Below is the amount that a sample of 15 customers spent forlunch ($) at a fast-food restaurant: 7.42 6.29 5.83 6.50 8.34 9.517.10 5.90 4.89 6.50 5.52 7.90 8.30...
- Q Transplant operations have become routine. One common transplantoperation is for kidneys. The most dangerous aspect of theprocedure is the possibility that the body may reject the neworgan. There are several...
- Q A cell phone manufacturer claims that the batteries in itslatest model provide 20 hours of continuous use. In order to verifythis claim, and independent testing firm checks the battery life...
- Q Because of staffing decisions, managers of the Gibson-MarimontHotel are interested in the variability in the number of roomsoccupied per day during a particular season of the year. A sampleof 24...
- Q QUESTION (please show your work so that I may understand how todo the problem) thanks Before you can calculate your teststatistic, you’ll have to calculate the SEM. Use the formula...
- Q assume a normal distribution with a mean of 65 and standarddeviation of 14 find P(56<X less than or equal to 68)
- Q Scenario: Imagine you are a researcher who is interested instudying whether sleep deprivation leads to increased reactiontimes (i.e., being slower) when driving. You randomly select asample of 30 licensed drivers....
- Q Use the R script to answer the following questions: (write downyour answers in the R script with ##)(1). Import FarmSize.csv to Rstudio. Use the correct function tobuild a linear regression...
- Q The life insurance industry maintains that the average workerin Saskatoon has no more than $25,000 of personal lifeinsurance. You believe this to be toolow. You sample 100 workers in Saskatoon at random...
- Q An advertising agency that serves a major radio station wants toestimate the mean amount of time that the station's audience spendslistening to the radio daily. From past studies, the standarddeviation...
- Q As the Data Manager (DM) on the “TES-100” project, the CEO hasdecided to proceed with the study and wants you to consider usingthe new savvy company system of remote data...
- Q Not handwriting answer, pleaseIn a word document, please answer the following questions:Course Introduction of BiostatisticsDefine the following terms:correlation coefficientscatter plotbivariate relationshipProvide an example where the outlier is more important to...
- Q A sample of 16 joint specimens of a particular type gave asample mean proportional limit stress of 8.55 MPa and a samplestandard deviation of 0.79 MPa.a)Calculate and interpret a 95%...
- Q What three independent variables could I use for geographicalstatistical model? Please give examples of how to use.
- Q A report classified fatal bicycle accidents according to themonth in which the accident occurred, resulting in the accompanyingtable.MonthNumber of AccidentsJanuary40February30March45April59May76June72July100August87September66October64November40December38(a) Use the given data to test the null hypothesisH0: p1...
- Q The mean volume of customer traffic in a new store is 927 peopleper week with a standard deviation of 86. Answer the followingquestions based on these data. Write out what...
- Q Tests in one teacher’s past classes have scores with a standarddeviation equal to 14.1. One of their recent classes has 27 testscores with a standard deviation of 9.3. Use a...
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