Basic Math question and answers for September 21, 2023
- Q The reaction time before lunch was compared with the reactiontime after lunch for a group of 28 office workers. Twenty twoworkers found their reaction time before lunch was shorter, and...
- Q Suppose X has a Normal distribution with mean µ= 50 andstandard deviation ? = 8.What percent of X is between 42 and 58?What percent of X is greater than 66?What...
- Q please answer all questions1. The primary purpose of Pearson’s Correlation Coefficientis?to measure the strength of a linear relationship between twovariablesdraw a Scatterplotfind Residual valuestransform a linear relationship between two variables...
- Q d. A travel agency is frequently asked questions about touristdestinations. Forexample, customers want to know details of the climate for aparticular month,the population of the city, and other geographic facts....
- Q Discuss the progression of statistics and probability fromancient times to modern times including a discussion of the uses ofstatistics and probability prior to the foundations in the16th and 17th centuries.
- Q When does one know that a sample size is adequate? Can one betoo small or too big? Can they be biased? What are you looking forwhen you see a report...
- Q Please describe the difference between a within subjects andbetween subjects variable. In addition, please provide detailed andspecific explanations of original and unique examples for each ofthe following factorial designs (a-c...
- Q In a certain? country, the true probability of a baby being aboy is 0.531. Among the next six randomly selected births in the?country, what is the probability that at least...
- Q What are the assumptions and advantages of nonparametricmethods?
- Q What are the statistics used to summarize categorical data?
- Q (PLEASE TYPE THEANSWERS)(STATISTICS 500)instructions : describe a research study in your area of studyIntroduction: Description of the study including thepurpose and importance of the research question being asked. Whatis your...
- Q Assume that a sample is used to estimate a population mean ? .Find the margin of error M.E. that corresponds to a sample of size18 with a mean of 47.4...
- Q Two plots at Rothamsted Experimental Station were studied forproduction of wheat straw. For a random sample of years, the annualwheat straw production (in pounds) from one plot was asfollows.7.176.336.547.177.317.187.065.796.245.916.14Use a...
- Q The following table shows ceremonial ranking and type of potterysherd for a random sample of 434 sherds at an archaeologicallocation.Ceremonial RankingCooking JarSherdsDecorated Jar Sherds(Noncooking)RowTotalA9045135B9154145C7579154ColumnTotal256178434Use a chi-square test to determine if...
- Q Victoria’s Secret online offers 2,500 items for sale, 60 of themare offered to VIP’s only. Fredricks of Hollywood offers 1,300items, where 45 are available to VIP members only. I believe...
- Q Question 3 [25]OK furniture store submit weekly records the number of customercontacts contacted per week. A sample of 50 weekly reports showed asample mean of 25 customer contacts per week....
- Q Two nonprofits are interested in sharing fundraising lists andcampaigns as they think their donors share common interests.Implicit in that assumption is they are related variables. Youcollect data below for thirteen...
- Q A. For a series of 1500 tosses, what is the natural logarithm ofthe total number of microstates associated with 50% heads and 50%tails? (Note: Stirling’s approximation will be useful in...
- Q Suppose you gather the following test scores from youfellow students: 92,71,67,81,73,90,76,76,85,77,62,99.A.The upper quartile is 85B.The interquartile range is 15.5C.The lower quartile is 71D.The median quartile is 76
- Q Respond to the following in a minimum of 175 words, please typeresponse:The standard error of the estimate of the mean is represented bythe equation: ??n Discuss what this equation means,...
- Q The accompanying data set consists of observationson shower-flow rate (L/min) for asample of n = 129 houses:4.612.37.17.04.09.26.76.911.55.111.210.514.38.08.86.45.15.69.67.57.56.25.82.33.410.49.86.63.76.48.36.57.69.39.27.35.06.313.66.25.44.87.56.06.910.87.56.65.03.37.63.911.92.115.07.26.115.318.47.25.45.54.39.012.711.37.45.03.58.28.47.310.311.96.05.69.59.310.49.75.16.710.26.28.47.04.85.610.514.610.815.57.56.43.45.56.65.915.09.67.87.06.94.13.611.93.75.76.811.39.39.610.49.36.99.89.110.64.56.28.33.24.95.06.08.26.33.86.0(a) Construct a stem-and-leaf display of the data.(Enter numbers from smallest to largest separated...
- Q One hundred students were placed into two groups. The two groupswere the South Beach diet and Keto diet. Below are the data forpounds lost after 1 month of dieting. Assume...
- Q How do you perform hypothesis testing on multiple regressiondata from ANOVA table step-by-step? Please provide example.
- Q The following data are from 10individuals that were treated with 2 different drugs that are saidto reduce acid in the stomach. Below are the pH’s of the stomachcontents after giving...
- Q . Many people believe that having more money will make themhappy. Dr. Shakespeare designed an experiment in which he randomlyand evenly assigned 15 people to three groups. He gave one...
- Q A researcher randomly assigns 33 subjects to one of threegroups. Group 1 receives technical dietary informationinteractively from an on-line website. Group 2 receives the sameinformation from a nurse practitioner, while...
- Q The following data show the annual revenue ($ millions) and theestimated team value ($ millions) for the 30 Major League Baseballteams (Forbes website, January 16, 2014).TeamRevenue ($ millions)Value ($ millions)Arizona...
- Q Given the following hypotheses:H0: ? ? 13H1: ? > 13A random sample of 10 observations is selected from a normalpopulation. The sample mean was 11 and the sample standarddeviation 3.6....
- Q Scores on an aptitude test are known to follow a normaldistribution with a standard deviation of 32.4 points. A randomsample of 12 test scores had a mean score of 189.7...
- Q Suppose you start up a company that has the developeda drug that is supposed to increase IQ. You know thatthe standard deviation of IQ in the general population is 45....
- Q There are three hospitals in the Tulsa, Oklahoma, area. Thefollowing data show the number of outpatient surgeries performed onMonday, Tuesday, Wednesday, Thursday, and Friday at each hospitallast week. At the...
- Q Xn are independent random variables and each one of them has anormal distribution with mean 0 and variance 1what is the distribution of X-bar if n=9what is the probability of...
- Q 3. There is one 1$ bill and one 5$ bill in your left pocket andthe same in your right pocket. You move one bill from the leftpocket to the right...
- Q Flip a fair coin 4 times. Let ? and ? denote the number of headsand tails correspondingly.(a) What is the distribution of ?? What is the distribution of ??(b) Find...
- Q This question involves coding in RStudio Problem 3 (Verzaniproblem 2.22):Write a function to compute the average distance from the meanfor some data vector.
- Q The number of hits to a website follows a Poisson process. Hitsoccur at the rate of 0.8 per minute between? 7:00 P.M. and 9?:00P.M. Given below are three scenarios for...
- Q Perform these hypothesis tests. Show the formulas for the teststatistics and what numbers go into them. Clearly show yourdecision, write it in words, and be sure to write out your...
- Q A systems analyst tests a new algorithm designed to work fasterthan the currently-used algorithm. Each algorithm is applied to agroup of 60 sample problems. The new algorithm completes the sampleproblems...
- Q A manufacturer of colored candies states that 13?% of thecandies in a bag should be? brown, 14?% ?yellow, 13?% ?red, 24?%?blue, 20?% ?orange, and 16?% green. A student randomly selected...
- Q A math professor claims that the standard deviation of IQ scoresof the students majoring in mathematics is different from 15, where15 is the standard deviation of IQ scores for the...
- Q The mean finish time for a yearly amateur auto race was 187.22minutes with a standard deviation of 0.377 minute. The winning?car, driven by Todd. Todd?, finished in 186.63 minutes. Theprevious?...
- Q Dottie's Tax Service specializes in federal tax returns forprofessional clients, such as physicians, dentists, accountants,and lawyers. A recent audit by the IRS of the returns she preparedindicated that an error...
- Q QUESTION 9 A nutritionist claims that children under the age of10 years are consuming more than the U.S. Food and DrugAdministration’s recommended daily allowance of sodium, which is2400 mg. To...
- Q Explain accommodations, modification, and alternative assessmentswith examples and who is eligible to use them
- Q 11. A manufacturing company produced the following number ofunits in the last 16 days: 27 28 27 28 27 25 25 28 26 28 26 28 3130 27 26 (e)...
- Q Hypothesis 1: Job stress is associated with absenteeism rates atwork.1. What type of relationship would you predict (positive linear,negative linear, and so on)?2. Graph and label the relationship you predict....
- Q Let S be a set and P be a property of the elements of the set,such that each element either has property P or not. For example,maybe S is the...
- Q A sample of n = 9 individuals is selected from a population withµ = 50. After a treatment is administered to the individuals, thesample mean is found to be M...
- Q Suppose that 19 measurements of the failure stress of carbonfiber specimens results in a sample mean of 562.68 MPa and samplestandard deviation of 180.874 MPa and that the data is...
- Q Suppose that your hypotheses are H0: ? = 0.25 and Ha: ? <0.25. In the context of these hypotheses, which of the followingstandardized statistics would provide the strongest evidenceagainst the...
- Q 4. One hundred students were interviewed. Forty–two are MonthlyActive Users (MAU) of Facebook (F), and sixty–five are MAU ofSnapchat(S). Thirty–four are MAU of both Facebook and Snapchat. Oneof the100 students...
- Q Question 1:The following table gives the frequency distribution of thenumber of orders received each day during the past 50 days at theoffice of the mail order company. Calculate the mean,...
- Q A scientist working for a large agriculture company isinterested in comparing the effect of various feed additives on thegrowth of chickens. Chickens were given feed supplemented witheither soy, cornmeal, whey,...
- Q The following data is representative of that reported in anarticle on nitrogen emissions, with x = burner arealiberation rate (MBtu/hr-ft2) and y =NOx emission rate (ppm):x100125125150150200200250250300300350400400y140140170210200330280390440450400590610660(a) Assuming that the simple...
- Q What would be the value of your portfolio today (i.e., in 1981),if you had invested $100 in the stock market index for each countryin July, 1980. Report the value of...
- Q 1. Kelly and Veronica are two teachers in a math class whoattend class independently of one another. For Friday classes,there is a .70 probability that kelly will come to class,...
- Q I can not get my Group Statistics or Indepependent Sample testto print...keep saying one group info is missing but it shows onother reports. How is the information entered on the...
- Q Reminder: You obtain a positive test result for HIV. There is noreason to believe that you should have a higher prior probabilityof being HIV positive than the average the average...
- Q 3.)A professional employee in a large corporation receives anaverage of ? = 39.8 e-mails per day. Most of these e-mailsare from other employees in the company. Because of the largenumber...
- Q Eight samples (m=8) have been collected from a manufacturingprocess that is in statistical control, and the dimension ofinterest has been measured for each part. It is desired todetermine the values...
- Q The Gallup-Healthways Well-being Index is a comprehensive surveyof the health status of Americans. A random sample of2,580 adults were asked, "Have you ever been told by a physician ora nurse that...
- Q Provide two columns of data that are related and demonstrate theExcel Scatterplot Correlation and Regression methodology. Which isthe Independent and Dependent variable?
- Q Purpose: To explore the sampling distribution for sampleproportions.Materials: One package of candies with multiple colors(M&M’s – any variety, Skittles – any variety, Reese’s Pieces,etc.). You may select any size package...
- Q To improve turnover (employees leaving your organization), youimplemented a new training program company-wide about a year ago.However, you're not sure that the training is equally effective inreducing turnover between your...
- Q Describe a scenario where a researcher could use a Goodness ofFit Test to answer a research question. Fully describe the scenarioand the variables involved and explain the rationale for youranswer....
- Q In a question involving a hypothesis test having the populationmean as the target parameter, you are given the sample size, n, theassumed population mean, the significance of the test, alpha,whether...
- Q For each of the following situations, explain whether thebinomial distribution applies for X.a. You are bidding on four items available on eBay. You thinkthat you will win the first bid...
- Q The commercial division of a real estate firm conducted a studyto determine the extent of the relationship between annual grossrents ($1000s) and the selling price ($1000s) for apartmentbuildings. Data were...
- Q Given are five observations for two variables, and.361217205954471416The estimated regression equation for these data is y = 70.84 -2.83xa. Compute SST, SSE , and SSR.(to 2 decimals)(to 2 decimals)(to 2 decimals)b....
- Q El documento de Excel anexo presenta las estadísticas decriminalidad en una ciudad. También se presentan otros datosimportantes a cerca de educación. El propósito de este ejercicio escrear dos modelos de...
- Q A semiconductor manufacturer produces printed circuit boardsthat are sampled to determine the thickness of their copperplating. The following statements create a data set named Trans,which contains the plating thicknesses (Thick)...
- Q Consider a sample with data values of 26, 25, 20, 15, 31, 33,29, and 25. Compute the 20th, 25th, 65th, and 75th percentiles.20th percentile25th percentile65th percentile75th percentile
- Q Suppose that you decide to randomly sample people ages 18-24 inyour county to determine whether or not they are registered tovote. In your sample of 50 people, 35 said they...
- Q According to the latest financial reports from a sporting goodsstore, the mean sales per customer was $75 with a populationstandard deviation of $6. The store manager believes 39 randomlyselected customers...
- Q In a statistic class, 11 scores were randomly selected with thefollowing results were obtained: 68, 74, 66, 37, 52, 71, 90, 65,76, 73, 22. What are the outer fences?A)-6.0, 140.0B)-10.0,...
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