Statistics question and answers for August 27, 2023
- Q World Foods, Inc., imports food products such as meats, cheese,and pastries to the United States from warehouses at ports inhamburg, Marseilles, and Liverpool. Ships from these ports deliverthe products to...
- Q A sociologist researching the link between race and inequalitybelieves that younger people and/or people with more educationgenerally have more tolerant views. To test this hypothesis, thesociologist gathers a random sample...
- Q A study of the effect of television commercials on 12-year-oldchildren measured their attention span, in seconds. The commercialswere for clothes, food, and toys.Clothes Food Toys4330522438584246433554492847633142531734483143582057474751445154a. Complete the ANOVA table using...
- Q Suppose that grade point averages of undergraduate students atone university have a bell-shaped distribution with a mean of 2.52and a standard deviation of 0.43. Using the empirical rule, whatpercentage of...
- Q The eigenvalue is a measure of how much of the variance of theobserved variables a factor explains. Any factor with an eigenvalue≥1 explains more variance than a single observed variable,...
- Q You are a researcher working for an educational research firm.Your firm was asked to conduct a satisfaction survey among theparents of students attending the School District public schools.Your boss has...
- Q When bonding teeth, orthodontists must maintain a dry field. Anew bonding adhesive has been developed to eliminate the necessityof a dry field. However, there is a concern that the new...
- Q A psychology researcher who does work in creativity wants todetermine whether her sample of 50-year-old adults (N =150) differs statistically from the population of 50-year-olds inintelligence. For her sample, she...
- Q Do you use probabilityin your profession or real life? You most likely do. For example,the chance of rain tomorrow is 27%. We hear similar probabilitiesin the media all the time....
- Q Suppose we want to estimate the proportion of teenagers (aged13-18) who are lactose intolerant. If we want to estimate thisproportion to within 5% at the 95% confidence level, how manyrandomly...
- Q Part 1b. Give one example of some practical case where we canuse Normal distribution (for instance, IQ scores follow a normaldistribution of probabilities with the mean IQ of 100 and...
- Q What is the purpose of calculating the Standard Error of theMean (SEM)?
- Q Listed below are systolic blood pressure measurements​ (mm Hg)taken from the right and left arms of the same woman. Assume thatthe paired sample data is a simple random sample and...
- Q Using the statistics table, find the probability of a score lessthan z = +.88. Write out your answer using all 4 numbers to theleft of the decimal.
- Q Researchers conducted a study to determine whether magnets areeffective in treating back pain. The results are shown in the tablefor the treatment​ (with magnets) group and the sham​ (or placebo)group....
- Q For the data set shown​ below.x  y3  44  55  87  128  15Find the estimates of β0 and β1.β0≈b0=-3.256​ (Round to three decimal places as​ needed.)β1≈b1=2.233(Round to three decimal places as​...
- Q Find the margin of error and 95% confidence interval for thefollowing surveys. Round all answers to 2 decimal places.a) A survey of 500 people finds that 45% plan to vote...
- Q A survey of 25 randomly selected customers found the ages shown(in years). The mean is 32.44 years and the standard deviation is10.17 years.a) Construct a 90% confidence interval for the...
- Q Unlike most packaged food products, alcohol beverage containersare not required to show calorie or nutrition content. A randomsample of 58 people was asked to estimate the calorie content of a12-oz...
- Q A 3-person jury has 2 members each of whom have independently aprobability 0.7 of making a correct decision. The third juror justflips a coin for each decision. In this jury,...
- Q 26% of all college students major in STEM (Science, Technology,Engineering, and Math). If 44 college students are randomlyselected, find the probability that a. Exactly 9 of them major inSTEM. Incorrect...
- Q According to a social media​ blog, time spent on a certainsocial networking website has a mean of 19 minutes per visit.Assume that time spent on the social networking site per...
- Q Researchers at a food company are interested in how a newspaghetti sauce made from green tomatoes (and green in color) willcompare to its traditional red spaghetti sauce. The company isworried...
- Q Jobs and productivity! How do banks rate? One way to answer thisquestion is to examine annual profits per employee. The followingis data about annual profits per employee (in units of...
- Q **NO HANDWRITTEN ANSWERS PLEASE **An automatic cookie machine at ACM, Inc. must deposit aspecified amount of 25 0.3 grams (g) of dough for each cookie on aconveyor belt. It costs...
- Q To determine if their 2.50 inch steel handles are properlyadjusted, Kane Manufacturing has decided to use an x‾x‾-Chart whichuses the range to estimate the variability in the sample.Step 1 of...
- Q Question 10 (1 point)You are looking for a way to incentivize the sales reps that youare in charge of. You design an incentive plan as a way to helpincrease in...
- Q The data in the table show the number of pounds of bananas soldper week at a grocery store when the banana display was positionedin the produce, milk, and cereal sections...
- Q One football player was tired of teachers and students makingcomments under the general assumption that student-athletes wereless intelligent or inferior students to those not playing sports.To get rid of the...
- Q Â Â Â Â I-Multiplication Rules1. How many differentslats can be made. If the splint is composed of 4 letters and 3digits.2. How many specialshuttle crews can be formed if: for pilot position,...
- Q For a sample of 12 trees, the volume of lumber (inm3) and the diameter ( in cm ) at a fixed height abovethe ground level was measured. The results were...
- Q An experiment is planned to compare three methods ofinstruction. Each is tested with a single classroom of 25 students.A different instructor is to be used for each classroom andconsequently each...
- Q (4 pts)The playing life of a sunshine radio is normallydistributed with a mean of 500 hours and a standard deviation of 60hours.What percent of the radios will last from 500...
- Q Find out the 95% confidence interval for a sample whoseMean=10.50 and Standard Deviation is= 2.0. The sample size isn=50.** please I need the answer in the computer typing not handwriting.Subject:...
- Q Control chart systems can operate on two basic methods ofmeasurement. State these two methods and briefly distinguishbetween them, giving three examples of industrial processes whereeach might be applied. Specify an...
- Q CaloriesFat (g)Saturdated Fat (g)Trans Fat (g)Sodium (g)Total Carbs (g)Dietary Fiber (g)Sugars (g)Protein (g)Chick-fil-A Sauce14013201706060Garlic& Herb Ranch Sauce140142.502301010HoneyMustard Sauce45000150110100HoneyRoasted BBQ Sauce60510702020Polynesian Sauce110610210130130Smokehouse Barbeque Sauce350002608080Sweet& Spicy Sriracha Sauce45000380100100ZestyBuffalo Sauce504.5107101000Avocado Lime Ranch Dressing31032505203021Chili...
- Q A research project has been tracking the health and cognitivefunctions of the elderly population in Arizona. The table belowshows the memory test scores from 16 elderly residents, testedfirst when they...
- Q Write a program to choose a random number X in the interval[2,10] 1000 times and record what fraction of the outcomes satisfyX > 5, what fraction satisfy 5 < X...
- Q In a cognitive psychology experiment, the researcher isinterested in whether encoding condition has an effect on memoryfor a list of words. She recruits 16 subjects to participate in theexperiment. Each...
- Q If you pay more in tuition to go to a top business​ school, willit necessarily result in a higher probability of a job offer at​graduation? Let y=percentage of graduates with...
- Q Finish times (to the nearest hour) for 59 dogsled teams areshown below. Draw a ogive. Use five classes. 261 275 236 244 280296 284 296 290 290 250 256 338...
- Q 1) Present the analysis of variance (ANOVA) table in standardformat.2) Report the result of the test, including an appropriatecritical value for the test.3) Comment on the validity of test result...
- Q Construct a frequency polygon for the following:60-69Â Â 1270-79Â Â 1580-89Â Â Â 1090-99Â Â Â Â Â 2100-109 1110-119Â Â 0120-129Â Â 1
- Q What are the differences between an event, and a simpleevent?In your opinion, using the information that you have learned inthis chapter, which of the following offer the strongest evidencefor the...
- Q A machine is used to fill containers with a liquid product. Fillvolume can be assumed to be normally distributed. A random sampleof ten containers is selected, and the net contents...
- Q A business journal investigation of the performance and timingof corporate acquisitions discovered that in a random sample of 2,767 ​firms, 705 announced one or more acquisitions during the year2000. Does...
- Q For this assignment, your group will utilize the preliminarydata collected in the Topic 2 assignment. Considering the specificrequirements of your scenario, complete the following steps usingExcel. The accuracy of formulas...
- Q Describe a scenario where a researcher could use a Two-Way ANOVAto answer a research question. Fully describe the scenario and thevariables involved and explain the rationale for your answer. Let'ssay...
- Q A consumer agency is investigating the blowout pressures of SoapStone tires. A Soap Stone tire is said to blow out when itseparates from the wheel rim due to impact forces...
- Q You wish to test the following claim (HaHa) at a significancelevel of α=0.05α=0.05.      Ho:μ=86.1Ho:μ=86.1      Ha:μ≠86.1Ha:μ≠86.1You believe the population is normally distributed and you know thestandard deviation is σ=14.2σ=14.2. You obtain a sample...
- Q When might one be interested in the mode or the median ratherthat the average? When might one be interested in the range ratherthan the standard deviation?
- Q The data in the table is the number of absences for 7 7 studentsand their corresponding grade. Number of Absences 4 4 4 4 6 6 6 6 66 6...
- Q The five most common words appearing in spam emails areshipping!, today!, here!, available, and fingertips!. Many spamfilters separate spam from ham (email not considered to be spam)through application of Bayes'...
- Q VII. You suggest a mean comparison procedure to evaluatedifferences between means of the drug groups and show her thefollowing output.drug emmean  SE df lower.CL upper.CL .group1     79.9 1.5916    76.5    83.2A   2     ...
- Q How does one decide upon the size of a sample?  Uponwhat does this decision depend?
- Q Review the concepts of confidence interval and margin of errorstudied in this unit. Say you were researching some aspect of apopulation, and the sample proportion is 25% with a margin...
- Q 1. Assume that the starting salaries for the Class of 2013college graduates is (rounded, in $1000’s) normally distributedwith µ = 45 and σ = 5. (Based on real data.) a....
- Q explain how a scatter diagram can be used to identify the type ofregression to use
- Q The Mean Corporation would like to invest in the booming healthfood industry. It is considering the creation of a health-drinkfranchise called Goose Juice. The investment department of the MeanCorporation wants...
- Q 1. Crestviewsells a particularly popular Christmas card once a year anddistributes the cards to gift shops. It costs Crestview $1 per cardto order from a printing company, and Crestview receives...
- Q Roberta wants to compare productivity, as measured by the numberof customers served, among three workers. The number of customersserved by each worker is shown below.EdwardCathyBrad556655597651666746607148Is there a difference in the...
- Q Suppose you want to know if different dosages of caffeine affectstudents’ performance on a test. We randomly sampled 15 collegestudents and randomly assigned them to three conditions.Group 1: Very large...
- Q You ask her what was the experimental unit and were theexperimental units randomized. She is unfamiliar with theseconcepts. Please explain experimental unit and the need forrandomization of the experimental units...
- Q 1Start Excel. Download and open the file namedexploring_ecap_grader_a1.xlsx.2On the DC worksheet, select the range A4:G4, wrap the text,apply Center alignment, and apply Blue, Accent 5, Lighter 60% fillcolor.3On the DC...
- Q The personnel office at a large electronics firm regularlyschedules job interviews and maintains records of the interviews.From the past records, they have found that the length of a firstinterview is...
- Q Healthcare administration leaders are asked to makeevidence-based decisions on a daily basis. Sometimes, thesedecisions involve high levels of uncertainty, as you have examinedpreviously. Other times, there are data upon which...
- Q Last year's records of auto accidents occurring on a givensection of highway were classified according to whether theresulting damage was $1,000 or more and to whether a physicalinjury resulted from...
- Q Think about a population mean that you may be interested in andpropose a hypothesis test problem for this parameter. Gatherappropriate data and post your problem, Also, post your ownsolution at...
- Q Discuss how the concepts of Applied Biostatistics can be appliedto real-world situations and increase your chances of career orlife success.
- Q The table to the right shows the number of men and​ women, in​thousands, enrolled in​ degree-granting institutions in a certainyear. The men and women are categorized by their age groups.Complete...
- Q In the survey of 1500 students for the united states age 18 andunder, 1043 were concerned about how they would pay forcollege.a) Find the mean and standard deviation of those...
- Q Johnson Company is preparing a bid on a new constructionproject. Two other contractors will be submitting bids for the sameproject.Based on past bidding practices, bids from other contractors canbe described...
- Q Compare maximax, and minimax regret modeling options in a decisionmaking process.
- Q A random sample of 172 students was asked to rate on a scale tofrom 1 (not important) to 5 (extremely important) health benefitsas a job characteristic (note that the rating...
- Q It is believed that standardized test scores, such as SAT, is agood predictor of first-year college students' GPA. x 1200 11201000 1420 1280 750 1100 y 3.2 2.5 2.7 3.5...
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