Statistics question and answers for July 15, 2023
- Q (Be sure to paste the R Console Output and code!!!) Using thefollowing data and R, write a brief paragraph about whether thein-home treatment is equally effective as the out-of-home treatmentfor...
- Q The owner of a specialty coffee shop wants to study coffeepurchasing habits of customers at her shop. She selects a randomsample of 60 customers during a certain week, with the...
- Q A class in probability theory consists of 3 men and 5 women. Anexam is given, and the students are ranked according to theirperformance. Assuming that no two students obtain the...
- Q A company is considering drilling oil wells. The probability ofsuccess for each well is 0.20. The cost of each well is $5(in1000). Each well that is successful will be worth...
- Q A medIV. A medical trial into the effectiveness of a newmedication was carried out. 120 females and 90 males took part inthe trial. Out of those people, 50 females and...
- Q 2) Describe what exploratory, descriptive, and causal researchis and how they are related to one another. Provide an example ofeach type of research.3) What are the four requirements for claiming...
- Q In each of the following situations, state which of thefollowing items in the STAT-TESTS menu would be the mostappropriate.With a sample proportion of 54% and a sample size of 350,...
- Q USE THE FOLLOWING DIRECTION FOR 1A AND 1B: In 2010, a randomsample of 250 dog owners was taken and it was found that 140 ownedmore than one dog. Recently, a...
- Q A player pays $ 13 to roll three six-sided balanced dice. If thesum of the 3 dice is less than 13, then the player will receive aprize of $ 70....
- Q Question 1The random variables X & Y are independent. E[X] = 5, E[Y] =7, Var[X] = 4,Var[Y] = 6. Calculate following expectation and variance. ( ?[?]=? ,???[?]=?2) ??(a) E[5X+6](b) E[6Y+3](c)...
- Q Question 2Suppose the waiting time of a bus follows a uniform distributionon [0, 20]. (a) Find the probability that a passenger has to waitfor at least 12 minutes. (b) Find...
- Q 1.6) Mention the business implications of performing ANOVA forthis particular case study.ABVolunteerRelief1112.41122.71132.31142.51214.61224.21234.91244.71314.81324.51334.41344.62115.82125.22135.52145.32218.92229.12238.722492319.12329.32338.72349.43116.13125.73135.93146.23219.932210.532310.632410.133113.53321333313.333413.2
- Q What type are each of these: discrete, continuous, orcategorical?and What level are each: interval, ordinal, ratio, nomial?-Number of Contacts on your phone-The high daily temperature in San Jose-The name of...
- Q The number of cell phones per 100 residents in countries inEurope is given in table #9.3.9 for the year 2010.  Thenumber of cell phones per 100 residents in countries of theAmericas...
- Q BOB’S SERVICE STATION AND DINER “Sylvia, we have been operatingthis service station and diner for many years. Lately, I have thefeeling that my income has declined. I think that there...
- Q As part of a project for their Intro Stat course, two studentscompared two brands of chips, Frito Lays and Golden Flakes, to seewhich company gives you more for your money....
- Q Hello, i have this excersice in R studioWrite a function in R that generates simulations of a Poisson random variable as follows: define I = [λ], and use p_i +...
- Q (25) Consider a population {1,2,3} which has only three numbers.(5) What are the relationships of the individuals of a randomsample, namely X_1,X_2…,X_n (5) If we sample with replacement fromthis population...
- Q 10.2) John has two unfair coins, and he claims that they arefrom the same model with the probability of obtaining a head being0.4. Coin A is tossed 100 times and...
- Q 1. A (maybe unfair) coin is tossed 100 times and 40 heads areobtained. At significance level α= 10%, do you think that the coinis fair? Use large-sample test for hypothesis...
- Q John is going to take a quiz with 10 MC questions. Eachquestion has only one correct answer out of 4 choices. Suppose Johnsimply answer each question by random guess,(5) What...
- Q A machine that produces a special type of transistor (acomponent of computers) has a 10% defect rate. The production isconsidered a random process where each transistor is independent ofthe others....
- Q Assume the monthly price change per share of Tencent follows anormal distribution with μ=2.8 and ?=15.(5) If you buy one share of Tencent and hold for one month,what is the...
- Q The mean starting salary for college graduates in spring of2018 was $43,200. Assume that the distribution of starting salariesfollows the normal distribution with a standard deviation of $3500.What percent of...
- Q Would frequent brief project evaluations be best, or would lessfrequent major evaluations be preferred? Explain your answer.
- Q Prevalence of autism in children of Somali origin livingin Stockholm: brief report of an at-risk population. Basedon a study by Barnevik-Olsson M, Gillberg C, Fernell E: This workwas a follow-up...
- Q A random sample of 100 daily stock returns was taken. Theaverage return in the sample appeared to be 4.81%. The populationstandard deviation is not known, but the sample standard deviationis...
- Q Gangelt is a small town in the west of Köln and effectedseverely by COVID19 pandemic.German researchers had conducted tests on 500 random residentsof the town and found that 70 of...
- Q In this study patientswere recruited from 3 different clinical sites. Use the followingdata to test if there is a difference in the proportions ofhypertensive patients across clinical sites.(old fashioned step...
- Q Let X1, . . . , Xn ∼ iid Unif(0, θ). (a) Is this family MLR in Y= X(n)? (b) Find the UMP size-α test for H0 : θ ≤...
- Q The following datawere collected in an experiment designed to investigate the impactof different positions of the mother during ultrasound on fetalheart rate. Fetal heart rate is measured by ultrasound in...
- Q Because of the rising costs of industrial accidents, manychemical, mining, and manufacturing firms have instituted safetycourses. Employees are encouraged to take these courses designed toheighten safety awareness among them. A...
- Q 1. A survey about same-sex marriage used a random sample with1200 adults. The results showed that30% favored legal marriage, 32%favored civil unions, and 38% favored no legalrecognition. Computer the right...
- Q 1. A researcher is interested in testing two different dosagesof a new sleeping medication in a phase II clinical trial against acontrol group receiving a placebo. Suppose the following tableobserves...
- Q Consider the following linear programming problem:                 Maximize Profit   30X + 50Y                 Subjectto             4X +  5Y = 40,000                                                             X ≥  3,000                                                             Y ≥  4,000                                                  X ≥ 0 and Y ≥ 0Use a graph to show...
- Q 26 randomly selected students were asked the number of moviesthey watched the previous week. The results are asfollows:# of Movies012345Frequency326843Round all your answers to one decimal place.The mean is:The median...
- Q My family bought a lovely suburban home that was advertised ashaving a 25 minute commute from UH. After a while I began to besuspicious that the commute was actually longer....
- Q The lifespans of meerkats in a particular zoo are normallydistributed. The average meerkat lives 13.113.113, point, 1years;the standard deviation is 1.51.51, point, 5 years.Use the empirical rule (68−95−99.7%)(68−95−99.7%)leftparenthesis, 68, minus,...
- Q A consumer product magazine recently ran a story concerning theincreasing prices of digital cameras. The story stated that digitalcamera prices dipped a couple of years ago, but now are beginningto...
- Q Assume that your friend claims that he can run 20 km in lessthan an hour and a professional sports team will recruit him aftergraduation based on this outcome so he...
- Q How much do wild mountain lions weigh? Adult wild mountain lions(18 months or older) captured and released for the first time inthe San Andres Mountains had the following weights (pounds):...
- Q PersonHeightWeight16011426060361200462240563133663220764104865135965120106512311661131266205136654146717015671861667198176713218681421969150206918821701992270201237010624711122571115267211727727828739529731093073110Mean67.17140.97Standard Deviation3.9048.54Correlation-0.195Step 2: Build Linear Modelhelp me find:Find Slope:find y-intercept:
- Q The number of months that a light bulb is functioning isexponentially distributed with parameter λ = 1/10 .What is the probability that a light bulb will burn for at least4...
- Q Desta is a gambler and regularly plays several rounds of agamble in which he wins $6,000 if odd number of dots face up when afair die is rolled twice and...
- Q Simulation and Expected Values: Yale Law Schoolsays 74% of their students pass the bar exam on their firsttry.To simulate passing students, we could assign the random digitsas:00 to 49 =...
- Q define the logistic regression model.
- Q You also have been asked to study whether there are anydifferences in the proportions of various income levels ofsupporters concerning whether they are willing to financiallycontribute to the candidate’s campaign....
- Q A company has 3 machines: A, B, and C. The number of breakdownsper week is distributed Poisson. On average, machine A breaks down.4 times per week, machine B breaks down...
- Q A report suggests that business majors spend the least amount oftime on course work than other college students (The New YorkTimes, November 17, 2011), A provost of a university conductsa...
- Q Explain to your classmate's what a null-hypothesis. How do youmake the decision to reject or not reject a Null-Hypothesis? Whatare some examples? All work must be in your own words.
- Q Data was collected from students to determine the effects onoverall grade average and number of hours spent playing video gamesper week.Grade  Hours/Week20 2396 374 685 567 856 1479 465 7Which...
- Q Please assist with finding the mean, standard deviation andcoefficient variation for the monthly profit of all the small,medium, large and very larges stores listed below.Store SizeMonthly ProfitVL$9,984VL$8,387VL$9,679VL$21,591VL$8,197VL$20,930M$3,305S-$11,264VL$28,367VL$18,904S$18,934VL$11,845M$15,747L$23,107VL$18,461VL$2,035L$11,771VL$22,783M-$3,619L$13,326VL$19,157VL$16,047L$5,675M$11,720L$4,130M$8,086VL$28,319VL$9,997L$12,785VL$27,153L$6,040M$13,871M-$8,339VL$18,762VL$29,030VL$8,336VL$9,140L$10,109VL$31,273VL$21,438VL$25,395VL$24,190VL$21,085VL$24,712VL$35,222M$25,346VL$13,707M$2,104S-$3,362VL$19,557VL$28,500S-$5,787VL$10,410M-$6,766VL$22,910VL$17,351M-$4,118VL$24,758M$7,779M$6,663
- Q Logestics Management Ch7 \"Just-in-time and the agile supplychain\" Based on this chapter answer the following.Assess the reasons for using lean thinking (suitable examples),what are the benefits from Suppliers to end...
- Q Suppose bit errors in a digital data file occur independentlywith probability p = 0.25 · 10^−6 per bit.X = number of bit errors in a 1 Mbyte data file (=...
- Q A European growth mutual fund specializes in stocks from theBritish Isles, continental Europe, and Scandinavia. The fund hasover 200 stocks. Let x be a random variable thatrepresents the monthly percentage...
- Q Studies show that massage therapy has a variety of healthbenefits. A sample of 46 typical one-hour massage therapy sessionsshowed an average charge of $70. The population standard deviationfor a one-hour...
- Q During the next four quarters, Dorian Auto must meet (on time)the following demands for cars: 4000 in quarter 1; 2000 in quarter2; 5000 in quarter 3; 1000 in quarter 4....
- Q Question(a) Consider a random sample of the following data: 254, 261, 250,258, 253, 257.Calculate the unbiased estimator of the populationvariance.(b) Suppose the GPA of all students enrolled in a particularcourse...
- Q what is confounding and how researchers minimizeit?
- Q A metropolitan transportation authority has set a bus mechanicalreliability goal of 3,800 bus miles. Bus mechanical reliability ismeasured specifically as the number of bus miles between mechanicalroad calls. Suppose a...
- Q MAT 152 Lab 4 Â Â Show your work, where appropriate. Remember that you do not haveto show any work for what you enter into your graphingcalculator.CITY is the city fuel consumption...
- Q Studies show that massage therapy has a variety of healthbenefits and it is not too expensive. A sample of 11 typicalone-hour massage therapy sessions showed an average charge of $58.The...
- Q A sample of 40 companies listed on the stock exchange has anaverage amount of total assets equal to 431,000,000, with astandard deviation of 120,000,000. At level of confidence α=0.05,test the...
- Q Consider a poor couple making decisions about the number ofchildren. Suppose that in this society, there is no old ageinsurance, and parents must rely on their children for support.Parents would...
- Q I want examples on Sign test (one for small sample andone for large sample) and paired-sample sign test (one for smallsample and one for large sample)
- Q A simple random sample of 30 households was selectedfrom a particular neighborhood. The number of cars for eachhousehold is shown below. Construct the 98% confidence intervalestimate of the population mean.2...
- Q a. all Hypothesis Tests must include all four steps,clearly labeled;b. all Confidence Intervals must include all output aswell as the CI itselfc. include which calculator function you used for eachproblem.3....
- Q Iwant Example for Sign test for small sample
- Q PLEASE DO NOT COPY OTHERS ANSWER, THANK YOU!Alice and Bob play the following game: in each round, Alicefirst rolls a single standard fair die. Bob then rolls a singlestandard fair...
- Q A researcher isinterested in determining whether there is a correlation betweennumber of packs of cigarettes smoked per day and longevity (inyears). n=10.Longevity# packs of cigarettes smoked (X)(Y)080070172170268265369360458455
- Q PLEASE DO NOT COPY OTHERS ANSWER, THANK YOU!Let x1, x2, · · · , xn ∈ {0, 1}.(a) (10 points) Consider the equation x1 + x2 + · · ·...
- Q A psychic claims to be able to predict the outcome of coin flipsbefore they happen. Someone who guesses randomly will predict abouthalf of coin flips correctly. In 100 flips, the...
- Q Solve this problem by hand.A thermal interaction between twocomponents requires that both components have similar temperature.One random sample for each component was obtained. The data issummarized in the table below:Component...
- Q National Bank (see previous problem:pasted down below) is considering adding a second tellerto the lunch-time situation to alleviate congestion. If the secondteller is added, find the following:The average teller utilizationThe...
- Q (A-Grade) The operations manager of a large production plantwould like to estimate the mean amount of time a worker takes toassemble a new electronic component. Assume that the populationstandard deviation...
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!