Statistics question and answers for August 28, 2023
- Q The distribution of the prices of new phone is positively skewedwith a long tail to the right, in a random sample of people whohave purchased a new phone, a mean...
- Q Three barbers work at a barbershop. Based on estimations, thebarbershop is idle 1 time out of 15; 2/15 of the time there is onecustomer; 3 times out of 15 there...
- Q Based on historical data, your manager believes that 34% of thecompany's orders come from first-time customers. A random sample of71 orders will be used to estimate the proportion offirst-time-customers. What...
- Q 1A) The proportions of defective parts produced by two machineswere compared, and the following data were collected. Determine a90% confidence interval for p1 -p2. (Give your answers correct to threedecimal...
- Q An article reports measurements of the total power, on the logscale, of the heart rate variability, in the frequency range 0.003to 0.4 Hz, for a group of 40 patients aged...
- Q Let x be a random variable representing dividend yield of bankstocks. We may assume that x has a normal distribution with σ =2.8%. A random sample of 10 bank stocks...
- Q The number of earthquakes that occur per week in Californiafollows a Poisson distribution with amean of 1.5.(a) What is the probability that an earthquake occurs within thefirst week? Show by...
- Q A study of 420 comma 059 cell phone users found that 130 of themdeveloped cancer of the brain or nervous system. Prior to thisstudy of cell phone​ use, the rate...
- Q Suppose µ is the mean of a normally distributed population forwhich the standard deviation is known to be 3.5. The hypotheses H0: µ = 10 Ha : µ 6= 10...
- Q Use Affordability, Quality, and Style as the only Values foryour decision in finding the best computer for you among 3computers you have identified as your choices. Apply theMultifactor Evaluation Process...
- Q Ad Lib CntrolTwo per Day ControlFood DeprivedWater DeprivedFood and Water Deprived1820615122025910112127898162361213152511141190120406055Data represent the effects of food and/or water deprivation onbehavior. Treatments 1 and 2 represent control conditions; animalreceived ad lib...
- Q The percentage of cotton in material used to manufacture men'sshirts follows. Construct a stem-and-leaf display for the data.Calculate the median and quartiles of these data. Choose thecorrect answer.33.6 37.0 34.0...
- Q The Centers for Disease Control and Prevention Office on Smokingand Health (OSH) is the lead federal agency responsible forcomprehensive tobacco prevention and control. OSH was establishedin 1965 to reduce the...
- Q In an effort to determine whether any correlation exists betweenthe price of stocks of airlines, an analyst sampled six days ofactivity of the stock market. Using the following prices of...
- Q Study 1: Unemployment Rates in Areas Where Minimum Wages AreHigher in the Cities Than in Surrounding Suburbs City UnemploymentRates Suburb Unemployment Rates P1 P 1 = 0.069 P2 P 2...
- Q Write the regression equation.Discuss the statistical significance of the model using theappropriate regression statistic at a 95% level of confidence.Discuss the statistical significance of the coefficient for theindependent variable using...
- Q Please answer a-bA clinical study shows the results of several people who havebeen analyzed to see if they have the gene that increases the riskof getting cancer. The study reveals...
- Q A survey was conducted to determine whether differences inhealth care expenditure exist between men and women. Datasetcontains total amounts spent on health care. a. Formulate thehypothesis that can be used...
- Q An apartment complex surveyed its tenants and asked a variety ofquestions about their living arrangements. One question asked forthe renter’s marital status using categorical responses of single,married, divorced, and widowed....
- Q On each turn, bonnie is tossing a fair coin and Clyde is rollinga fair die. They stop once Clyde rolls an odd number for the firsttime. Let X be the...
- Q Please answer these questions using SPSS. Thank youNote: For all assignments, you must show therequested output from SPSS.Example. Determine the descriptive statisticsfor three quantitative variables. Which variable has the highestmean?...
- Q 1- Nelson Industries manufactures a part for a type of aircraftengine that is becoming obsolete. The sales history for the last 10years is as follows:year   salesDec-98 945Dec-99 875Dec-00 760Dec-01...
- Q Listed below are the top 10 annual salaries​ (in millions of​dollars) of TV personalities. Find the​ range, variance, andstandard deviation for the sample data. Given that these are thetop 10​...
- Q 2.The following table contains data on the joint distribution ofage(Age​)and average hourly earnings​(AHE​)for 25 to 34​ year-oldfull-time workers with an educational level that exceeds a highschool diploma in 2012. Download...
- Q Find the​ z-score such that the interval within z standarddeviations of the mean for a normal distribution containsa. 34% of the probabilityb. 94% of the probability
- Q How would you use an error component of a time series to know ifthe time series can be used as a predictor?
- Q In a controlled laboratory environment, independent randomsamples of 10 adults and 10 children were tested by a psychologistto determine the room temperature that each person finds mostcomfortable. The study provided...
- Q An automobile manufacturer claims that their van has a 46.4miles/gallon (MPG) rating. An independent testing firm has beencontracted to test the MPG for this van. After testing 140 vansthey found...
- Q USE THIS TABLE to practice the ExpectedMonetary Value (EMV), Expected Opportunity Loss (EOL), and ExpectedValue of Perfect Information (EVPI). *** Use the .30 for theprobability of a Strong Market, .50...
- Q You have a normal population with amean of 1000 and a standard deviation of 100. Determine the scoresassociated with the following percentiles:50%45%95%5%77%
- Q 1- What are the advantages and disadvantages for using doughnutchart?2- What type of insights can you gain from a contingency tablethat contains three variables that you cannot gain from acontingency...
- Q In a study of pregnant women and their ability to correctlypredict the sex of their​ baby, 58 of the pregnant women had 12years of education or​ less, and 41.4​% of...
- Q Consider the following simplified financial statements for theFire Corporation (assuming no income taxes):Income Statement  Sales$38318  Costs$24483Balance Sheet  Assets$56924  Debt$37803Equity?The company has predicted a sales increase of 14 percent. It haspredicted that every item on...
- Q Please, i need Unique answer, Use your ownwords (don't copy and paste).*Please, don't use handwriting. *Please,don't use handwriting.* *Please, don't usehandwriting. *Please, don't usehandwriting.**Please, don't usehandwriting. *Please, don't usehandwriting.**Please, don't...
- Q 1. Give a 90% confidence interval, forμ1−μ2μ1-μ2 given the following information.n1=45, ¯x1=2.97, s1=0.88n2=20, ¯x2=3.44, s2=0.83........ ± ........ Rounded to 2 decimal places.2. A travel magazine conducts an annual surveywhere readers...
- Q Table 1.3  Hillsboro County Age Profileby SexAgesCity/TownTotalUnder 55−1415−2425−4445−6465−7475Jasper51,2303,9427,6477,53315,72611,4873,0831,812Middleboro48,5023,2037,0606,72513,90410,6613,5223,427Statesville14,7801,0222,1511,9204,5163,282903986Harris City12,8358051,8681,7803,6292,8508481,055Mifflenville11,2537121,4481,2593,6552,499743937Carterville2,198102320305655488156172Minortown2,005109292278497445163221Boalsburg1,964114286272586436143128Total144,76810,00921,07220,07243,16832,1489,5618,738To what degree does the age profile of Hillsboro Countyresemble the overall age profile demographic of the United States?Which towns in the county...
- Q Derive the formula for a (1-α) level confidence interval for theMean response E(Y|X=x*) using the simple linear regression model,where x* is a specified value for X.  Â
- Q Suppose that GLC earns a $2000 profit each time a person buys acar. We want to determine how the expected profit earned from acustomer depends on the quality of GLC's...
- Q Along with interest rates, life expectancy is a component inpricing financial annuities. Suppose that you know that last yearlife expectancy was 77 years for your annuity holders. Now you wantto...
- Q A statistical program is recommended.Data showing the values of several pitching statistics for arandom sample of 20 pitchers from the American League of MajorLeague Baseball is provided.PlayerTeamWLERASO/IPHR/IPR/IPVerlander, JDET2452.401.000.100.29Beckett, JBOS1372.890.910.110.34Wilson, CTEX1672.940.920.070.40Sabathia,...
- Q Call CenterShift A Average Call TimeShift B Average Call TimeAverage Satisfaction LevelAverage Number of Employees1142921002111903536048041025254585714696183325472440242858654679334633010919148Use the z-score to determine which call centers, if any, shouldbe considered outliers in each of...
- Q In a survey of 615 males ages​ 18-64, 390 say they have gone tothe dentist in the past year.Construct​ 90% and​ 95% confidence intervals for the populationproportion. Interpret the results...
- Q Problem 1. An “antique†table is for sale in a sealed bidauction. It will go to the high bidder at the price the high bidderbids. You don’t know if it...
- 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 gave the following weights (pounds):731011301246064Assume...
- Q Q 7:Determine whether the following value is a continuous randomvariable, discrete random variable, or not a random variable.a. The height of a randomly selected personb. The hair color of adults...
- Q How can you assess the reliability and validity of qualitativeresearch?How does narrative analysis differ from content analysis?
- Q Suppose 88% of all batteries from a supplier have acceptablevoltages. A certain type of flashlight requires two type-Dbatteries, and the flashlight will work only if both its batterieshave acceptable voltages....
- Q Suppose a health psychologist conducted a weight loss programfor middle aged adults and obtained the data presented in the tablebelow. Use ANOVA to determine whether there is a difference in...
- Q 1) Overproduction of uric acid in the body can be an indicationof cell breakdown. This may be an advance indication of illnesssuch as gout, leukemia, or lymphoma.†Over a period...
- Q write in Bold letters thanksTwo types of medication for hives are being tested. Themanufacturer claims that the new medication B is more effectivethan the standard medication A and undertakes a...
- Q USA Today reported that approximately 25% of all state prisoninmates released on parole become repeat offenders while on parole.Suppose the parole board is examining five prisoners up for parole.Let x...
- Q he average sales perstore of ABC Inc.’s best-selling product in a supermarket chainlast year was $15,000. A random sample of80 stores selected from the chain shows that thisyear the average...
- Q A certain weightlifter is prone to back injury. He finds that hehas a 20% chance of hurting his back if he uses the proper form ofbending at the hips and...
- Q [Investment Planning] Temoc is a high tech company that hasrecently gone public, and trades using the symbol TEMO. Comet is arival high tech company that has also recently gone public,...
- Q what is the purpose of trimming the mean?
- Q Derive the E(MStreatment) for One-Way ANOVA.
- Q A recent article in Bloomberg Businessweeklisted the “Best Small Companies.†We are interested in the currentresults of the companies’ sales and earnings. A random sample of 12companies was selected and...
- Q From the following observations of annual EPS for a company,what is the first-order autocorrelation?TimeEPS13.0623.2734.4444.0755.2665.59Note that using the CORREL() spreadsheet function will notproduce the correct result. Though for a large sample...
- Q One of the authors came across an article (USA Today, 2008) thatsaid that on average Americans have visited 16 states in the UnitedStates. In a survey of 50 students in...
- Q Engineers concerned about a tower's stability have doneextensive studies of its increasing tilt. Measurements of the leanof the tower over time provide much useful information. Thefollowing table gives measurements for...
- Q The dataset Golfers2008.xlsx saved in Datasets inBlackboard contains data on the top 40 golfers in 2008.This was the year when Tiger Woods won the U.S. Open in June andthen had...
- Q 1. A box contains four red, five blue, and eleven green lenses.One lens is randomly selected from the box. is the probability thatthe selected lens is blue.2. A box contains...
- Q information systems.in modern organisations, most business information systems (Bis)make extensive use of information technology such as personalcomputers. discuss the advantages and disadvantages of thiscomputer-based information system.
- Q In the table below are selected values for the OC curve for theacceptance sampling plan n = 210, c = 6. Upon failed inspection,defective items are replaced. Calculate the AOQ...
- Q If subjects are randomly selected from a university using IDnumbers, what sampling method is used?If the psychologist first takes all the women, and randomlyselects 51 of them by randomly drawing...
- Q Need; Hypotheses: Test statistic and value: P-value: andConclusion:A) Past sales records indicate that sometimes there is a largedifference between the selling prices that different sales reps areable to negotiate for...
- Q For each of the following Hypotheses (including test statisticand other information), find de p-value (or its bounds) and drawbasic conclusions with 99% confidence.1) Ho : p = po, H1: P...
- Q Optimal ProfitThe costs to a store for two models ofGlobal Positioning System (GPS) receivers are $80 and $100. The $80model yields a profit of $25 and the $100 model yields...
- Q Refer to the accompanying data set of mean drive-through servicetimes at dinner in seconds at two fast food restaurants. Constructa 99% confidence interval estimate of the mean drive-throughservice time for...
- Q (a) Use the Excel tab titled SHINGLESto construct 95% confident intervals for the mean pallet weight foreach shingle company. (b) In practical terms, interpret both ofthese confident intervals individually. (c)...
- Q Passing the ball between two players during a soccer game is acritical skill for the success of a team. A random sample of passesmade by the English and German teams...
- Q Explain the influence of a level of significance and sample sizehas on hypothesis testing. Provide an example of the influence andhow it impacts business decisions.
- Q In a 17 month period the powerball was drawn from a collectionof 35 balls numbered 1-35. Total of 150 drawings were made. For thepurpose of this exercise we grouped numbers...
- 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 A car dealership has 6 red, 11 silver and 5 black cars on thelot. Ten cars are randomly chosen to be displayed in front of thedealership. Complete parts (a) through...
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!