Basic Math question and answers for October 09, 2023
- Q The accompanying table lists the ages of acting award winnersmatched by the years in which the awards were won. Construct a?scatterplot, find the value of the linear correlation coefficient?r, and...
- Q I am doing a kids fishing game. right now I am doing it with 15fish and number them 1-5. prize one the lowest value and prize 5the highest value. What...
- Q The number N of devices that a technician must try to repairduring the course of an arbitrary workday is a random variablehaving a geometric distribution with parameter p = 1/8....
- Q The World Bank collected data on the percentage of GDP that acountry spends on health expenditures ("Health expenditure," 2013)and also the percentage of woman receiving prenatal care ("Pregnantwoman receiving," 2013)....
- Q A ski gondola carries passengers to the top of a mountain. Aplaque states that its maximum capacity is 12 people or 2019 lbs.Men’s weights are normally distributed with a mean...
- Q For the past 104 ?years, a certain state suffered 27 direct hitsfrom major? (category 3 to? 5) hurricanes. Assume that this wastypical and the number of hits per year follows...
- Q P(Z<z)zMuSigmax0.2735FALSE20265FALSE0.8615FALSE54360FALSE0.0790FALSE352244FALSE0.3020FALSE552348FALSE0.4139FALSE787255FALSE0.9537FALSE643499FALSE0.9127FALSE94960FALSE0.7930FALSE6866FALSE0.4808FALSE246205FALSE0.3821FALSE-934FALSE0.3747FALSE25650FALSE0.0671FALSE-1236FALSEInstructions:Complete columns B and F. Don't round columnF.Notes:Skill with no specific practice set: Finding z andx for P(Z>z). These must be found by either subtracting from 1or reversing sign of...
- Q In the following problem, check that it is appropriate to usethe normal approximation to the binomial. Then use the normaldistribution to estimate the requested probabilities. Do you try topad an...
- Q (2) Suppose the original regression is given by y =?0 + ?1x1 + ?2x2 +?3x3 + u. You want to test forheteroscedasticity using F test. What auxiliary regression shouldyou run?...
- Q What is the best statistical analysis to use when determining ifverbal reinforcement affects response rates?
- Q The home run percentage is the number of home runs per 100 timesat bat. A random sample of 43 professional baseball players gavethe following data for home run percentages.1.6 2.4...
- Q The mean height of women in a country? (ages 20??29) is 64.2inches. A random sample of 65 women in this age group is selected.What is the probability that the mean...
- Q Exercise 11.55 describes a study conducted by Busseri andcolleagues (2009) using a group of pessimists. These researchersasked the same question of a group of optimist: optimist ratedtheir past, present, and...
- Q . The data is separated into 3 columns – Deep Breathing,Visualization, Leisurely Walk. This time, the difference scores areentered directly. Run the ANOVA Test andIf your test indicates that there...
- Q An article reported that 7% of married couples in the UnitedStates are mixed racially or ethnically. Consider the populationconsisting of all married couples in the United States.(a) A random sample...
- Q describe how the presence of possible outliers mightbe identified onhistogramsdotplotsstem-and-leaf displaysbox-and-whisker plots
- Q In a study on students’ intention to apply for graduate school,a researcher is interested in the difference between Sociologymajors and Justice Studies majors at a large state university. Theresearch hypothesizes...
- Q Periodically, Merrill Lynch customers are asked to evaluateMerrill Lynch financial consultants and services (2000 MerrillLynch Client Satisfaction Survey). Higher ratings on the clientsatisfaction survey indicate better service with 7 the...
- Q Every morning Mary randomly decides on one of three possibleways to get to work. She makes her choice so that all three choicesare equally likely. The three choices are described...
- Q A.) A group of engineers developed a new design for a steelcable. They need to estimate the amount of weight the cable canhold. The weight limit will be reported on...
- Q Which correlation coefficient is the most appropriatefor measuring the relationship between Right/ Left Handedness andReading Comprehension Scores?A. Spearman RhoB. chisquareC. phi coefficientD. point biserialHow do you choose between Spearman Rho...
- Q 9A A personnel researcher has designed a questionnaireand she would like to estimate the average time to complete thequestionnaire. Suppose she samples 100 employees and finds that themean time to...
- Q Simulate the effect of the Price change if it will follow thefollowing pattern for Type A. (build the 95% confidence interval)Type A (Price (million Dollar) =1.25 (20% probability); Price(million Dollar)...
- Q A psychologist believes that students’ test scores will beaffected if they have too much caffeine before taking an exam. Toexamine this, she has a sample of n = 15 students...
- Q Why are sampling distributions important to the study ofinferential statistics? In your answer, demonstrate yourunderstanding by providing an example of a sampling distributionfrom an area such as business, sports, medicine,...
- Q There are twenty stores for a grocery chain in the Mid-Atlanticregion. The regional executive wants to visit five of the twentystores. She asks her assistant to choose five stores and...
- Q Terri Vogel, an amateur motorcycle racer, averages 129.71seconds per 2.5 mile lap (in a seven-lap race) with a standarddeviation of 2.28 seconds. The distribution of her race times isnormally distributed....
- Q Use the Multiplication Rule to find the number of positivedivisors of 20!. Include a procedure that “builds” suchdivisors
- Q A study was done on body temperatures of men and women. Theresults are shown in the table. Assume that the two samples areindependent simple random samples selected from normallydistributed? populations,...
- Q Project Assignment The purpose of this assignment is for you togain practice in applying the concepts and techniques we learned inclass. In order to complete the assignment, please do thefollowing:1....
- Q Consider a six-sided fair dice. Complete the following tablesfor this die:Number on the diceNumber of times it appears on the diceRelative frequency of seeing that number123456TotalThis is the entire question,...
- Q ****ANSWERS ARE GIVEN BUT MUST SHOW ALL WORK; PLEASE (NOEXCEL OR SPSS)*****----------------------------------------------------------------------1. To answer this question, refer to the following hypotheticaldata collected using replicated measures design.Subject123 45678 910Pre50493716804240583121Post56503025904460713222A. In a...
- Q The table below contains the overall miles per gallon? (MPG) ofa type of vehicle.2829242229322325353235232634Construct a 95?% confidence interval estimate for the populationmean MPG for this type of? vehicle, assuming a...
- Q An airline records flight delays in and out of Chicago O'Hareairport for a year. The average delay for these flights is 12.66minutes with a standard deviation of 4.17 minutes. For...
- Q What statistic should I use to measure the reliability here?The U.S. Olympic Committee wants to know whether the 6 jdugesfor the figure skating competition give consistent (i.e., similar)ratings of the...
- Q Consider sampling heights from the population of all femalecollege soccer players in the United States. Assume the mean heightof female college soccer players in the United States is ? =...
- Q Choose a study design and justify the reasons you chose thedesign over others.Select a statistical measure you would use to describe theassociation (if there is one) between body mass index...
- Q A researcher hypothesizes that the percentage of Ball StateUniversity students who sleep 8 or more hours per night is lowerthan the general population of adults. Previous research has foundthat 40%...
- Q The number of letters handled daily by a post office is normallydistributed with a mean of 20,000 letters and a standard deviationof 100 letters. Find the percent of days on...
- Q An independently selected sample of five men also participatedin the same study. The table below shows results for the numberof pounds lost by the five men and the five women...
- Q There are many controversies in the real life about thehypothesis testing. What do you think are the potential reasons forthat? Can we find and share any example of misleading results...
- Q PriceBedroomBathroomCarsSQ FT298,00032.501,566319,90032.502,000354,0003220374,90042.502,816385,0004200389,00032.502,248399,0004302,215415,00032.503,188444,9003202,530450,0003201,967465,0004302,564340,00042.502,293275,00032.521,353425,0003201,834250,00032.505,837450,00032.509,060390,00033.501,002269,00032.501,680425,00032.524,356425,00022.522,993425,0003304,356429,90053.512,154400,00032.521,846399,9003212,018388,9904402,295Plz do all the calculations on excel n show the excelfiles.Construct and interpret a correlation matrix for yourdata.Show the step wise process of determining the best regressionmodel to predict...
- Q State H0 and H1. Answer the question. Use megastat and submitsoftware output.See Worksheet 4. John Isaac Inc., a designerand installer of industrial signs, employs 60 people. The companyrecorded the type...
- Q Let x be a random variable that represents red blood cell (RBC)count in millions of cells per cubic millimeter of whole blood.Then x has a distribution that is approximately normal....
- Q Let n1equals100?, Upper X 1equals50?, n2equals100?, and Upper X2equals30. Complete parts? (a) and? (b) below. a. At the 0.01 levelof? significance, is there evidence of a significant differencebetween the two...
- Q What is the impact of widening the margin of error?Question 9 options:The confidence level increases.The confidence level decreases.The confidence level stays the same.It is unclear what the confidence level does.You...
- Q Give and interpret the 95% confidence intervals for males and asecond 95% confidence interval for females on the SLEEP variable.Which is wider and why?Known values for Male and Female:Males: Sample...
- Q In the following problem, check that it is appropriate to usethe normal approximation to the binomial. Then use the normaldistribution to estimate the requested probabilities.It is estimated that 3.5% of...
- Q The World Bank collected data on the percentage of GDP that acountry spends on health expenditures ("Health expenditure," 2013)and also the percentage of woman receiving prenatal care ("Pregnantwoman receiving," 2013)....
- Q Hello, I have been trying to answer this question forthe last hour and I am still struggling could someone help me? Thedeadline is in 1hour!Perform an analysis of variance on...
- Q According to the Centers for Disease Control, the mean number ofcigarettes smoked per day by individuals who are daily smokers is18.1. A researcher claims that retired adults smoke less than...
- Q AA real estate agency wants to compare the appraised values ofsingle-family homes in two Black Hawks County communities. A randomsample of 60 listings in Cedar Falls and 95 listings in...
- Q Observed FrequenciesRemedial EnglishNot in Remedial EnglishTotalNormal22187209ADD197493Total of the two categories41261302My Question: How do you run the appropriate chi square test onthis data in SPSS? I need to know how to...
- Q You are a researcher who wants to know if there is arelationship between variable Y and variable X. You hypothesizethat there will be a strong positive relationship between variableY GPA...
- Q How does lowering the screening cutoff point effect sensitivityand specificity, Positive predictive value, and Negative PredictiveValue of the test assuming prevalence stays the same? Why?
- Q Using a random sample of n = 50, the sample mean is = 13.5.Suppose that the population standard deviation is ?=2.5.Is the above statistical evidence sufficient to make thefollowing claim...
- Q Most married couples have two or three personality preferencesin common. A random sample of 375 married couples found that 134had three preferences in common. Another random sample of 573couples showed...
- Q The following data were obtained from a repeated-measures studycomparing 3 treatment conditions. Use a repeated-measures ANOVAwith a=.05 to determine whether there are significant meandifferences among the three treatments (do all...
- Q According to a study conducted for Gateway Computers, 59% of menand 70% of women say that weight is an extremely/very importantfactor in purchasing a laptop computer. Suppose this survey wasconducted...
- Q a random sample of 175 xray machines is taken. and 54machines in the sample malfunction. compute a 95% confidenceinterval for the proportion of all xray machines that malfunction.then calculate the...
- Q A study commissioned by the power company shows that of 9,848persons residing within 500 yards of high voltage lines, 600 havedeveloped one of the cancers in question. Of 13,112 living...
- Q 1) The first task is to review some information that might beuseful later:a) Write a brief definition of the word "quartile" as we haveused it in previous weeks. Be sure...
- Q Please answer all parts, it is not that lengthy. If you can'tanswer last parts, don't attempt then . Leave for someone elseA manufacturing process produces defective items 15% of thetime....
- Q -Identify why you choose to perform the statistical test (Signtest, Wilcoxon test, Kruskal-Wallis test).-Identify the null hypothesis, Ho, and the alternativehypothesis, Ha.-Determine whether the hypothesis test is left-tailed,right-tailed, or two-tailed.-Find...
- Q A large tank of fish from a hatchery is being delivered to alake. The hatchery claims that the mean length of fish in the tankis 15 inches, and the standard...
- Q Find the expected count and the contribution to the chi-squarestatistic for the left-parenthesis C comma F right-parenthesis cellin the two-way table below. Upper D Upper E Upper F Upper G...
- Q Acorporation must appoint a president a chief executive officerchief operating officer and chief financial officer. It must alsoappoint a planning committee with five different numbers. There are15 qualified candidates, and...
- Q PLEASE SHOW ALLCALCULATIONS!!You suspect that an unscrupulous employee at a casinohas tampered with a die; that is, he is using a loaded die. Inorder to test this claim, you roll...
- Q Table #10.1.6 contains the value of the house and the amount ofrental income in a year that the house brings in ("Capital andrental," 2013). Find the correlation coefficient and coefficient...
- Q 1. What is a monotone class?2.Prove that every algebra or field is a monotone classProof that1. show that the intersection of any collection of algebra or fieldon sample space is...
- Q An education researcher claims that 62% of college studentswork? year-round. In a random sample of 200college? students, 124 say they work? year-round. At alphaequals=0.010?, is there enough evidence to reject...
- Q One part of this question I am getting wrong. I'm assuming it'sthe test statistic? I got 1 for Question C, and I got 5.432 forquestion b, and I got B...
- Q Wildlife biologists inspect 158 deer taken by hunters and find38 of them carrying ticks that test positive for Lyme disease.a) Create a 90% confidence interval for the percentage of deerthat...
- Q For a certain wine, the mean pH (a measure of acidity) issupposed to be 3.32 with a known standard deviation of ? =.14. The quality inspector examines 31 bottles at...
- Q A medical researcher is studying the effects of a drug on bloodpressure. Subjects in the study have their blood pressure taken atthe beginning of the study. After being on the...
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