Basic Math question and answers for September 25, 2023
- Q According to a? publication, 12.3?% of 18 to 25 dash year dasholds were users of marijuana in 2000. A recent poll of 1293randomly selected 18 to 25 dash year dash...
- Q A simple random sample of 1100 males aged 12 to 17 in the UnitedStates were asked whether they played massive multiplayer onlinerole-playing games (MMORPGs); 775 said that they did. a....
- Q The manager of the Groove Shopping Mall in Windhoek claims thatvisitors to this mall spend always more than 90 minutes in the mallon any occasion. to test this claim, the...
- Q The Cotton Mill is anupscale chain of women's clothing stores, located in thesouthwestern United States. Do to recent success, The Cotton Mill'stop management is planning to expand by locating new...
- Q You are a member of a group of researchers who study the readingability of children. You would like to know if any of the followingfactors have an effect on the...
- Q A consumer researchorganization was interested in the influence of type of water onthe effectiveness of a detergent. Test batches of washings were runin four randomly chosen machines having a particular...
- Q Compare and contrast the deductive and inductive researchmodels.
- Q Here is a simple probability model for multiple-choice tests.Suppose that each student has probability p of correctlyanswering a question chosen at random from a universe of possiblequestions. (A strong student...
- Q Exam 11- Let a Population be { 5,7,9,11,13,15}Find the sample mean distribution for pairs.(a)Find the Mean + Standard deviation of your distribution(2)Sketch The distribution.(3)Compare the values of the mean and...
- Q The data show the list and selling prices for several expensivehomes. Find the regression? equation, letting the the list price bethe independent? (x) variable. Find the best predicted sellingprice of...
- Q A student studying for a vocabulary test knows the meanings of10 words from a list of 26 words. If the test contains 10 wordsfrom the study list, what is the...
- Q Research is an integral part of all professional fields.Designing a research study can be a complicated task that can besimplified if the appropriate techniques can be identified. Thisassignment will give...
- Q James Short was a maker of optical instruments, particularlytelescopes. He was born in Edinburgh, Scotland and entered theUniversity of Edinburgh in 1726, where he attended lectures by themathematician Colin Maclaurin....
- Q A telephone company claims that the service calls which theyreceive are equally distributed among the five working days of theweek. A survey of 79 randomly selected service calls was conducted.Is...
- Q Consider the following contingency table of observedfrequencies. Complete parts a. through e. below.Column VariableRow VariableUpper C 1C1Upper C 2C2Upper C 3C3Upper R 1R12020771818Upper R 2R288881313Upper R 3R38816166Click the icon to...
- Q ExplainNull and Alternative HypothesesHypothesis Tests for Differences between Population MeansHypothesis Test for Equal Population VariancesHypothesis Tests for Differences between PopulationProportionsPlease don't send the screenshot of written document,either type it or...
- Q A telephone company claims that the service calls which theyreceive are equally distributed among the five working days of theweek. A survey of 79 randomly selected service calls was conducted.Is...
- Q Suppose babies born after a gestation period of 32 to 35 weekshave a mean weight of 2800 grams and a standard deviation of 700grams while babies born after a gestation...
- Q An engineer has designed a valve that will regulate waterpressure on an automobile engine. The valve was tested on 120engines and the mean pressure was 7.1 lbs/square inch. Assume thevariance...
- Q Fully describe a situation where you believe a statisticalcorrelation or regression would be of interest and describe thestudy and how linear correlation or regression would further theaims of the study.
- Q Using the data set (link below), please calculate a one-waychi-square tests for President Obama approval rating for the firstyears in office. Specifically run chi-square on the "Approving"column.This is the information...
- Q Using the data set (link below), please calculate a one-waychi-square tests for President Bush approval rating for the firstyears in office. Specifically run chi-square on the "Approving"column.This is the information...
- Q Annie and Alvie have agreed to meet between 5:00 P.M. and 6:00P.M. for dinner at a local health-food restaurant. Let X = Annie'sarrival time and Y = Alvie's arrival time....
- Q A university would like to examine the relationship between afaculty? member's performance rating? (measured on a scale of?1-20) and his or her annual salary increase. The table to the rightshows...
- Q QuestionSampling is the process of selecting a representative subset ofobservations from a population to determine characteristics (i.e.the population parameters) of the random variable under study.Probability sampling includes all selection methods...
- Q The director of the IRS has been flooded with complaints thatpeople must wait more than 45 minutes before seeing an IRSrepresentative. To determine the validity of these complaints, theIRS randomly...
- Q Let x = age in years of a rural Quebec woman at thetime of her first marriage. In the year 1941, the populationvariance of x was approximately ?2 =5.1. Suppose...
- Q You conduct a study of employee stress levels within yourorganization, finding these scores: 3.16, 2.12, 5.12, 3.21, 1.11,4.32, 4.87, 3.79. The test manual you received when ordering thestress survey says...
- Q (PLEASE TYPE THE ANSWERS)(STATISTICS 500)instructions : describe a research study in your area of studyIntroduction: Description of the study including the purpose andimportance of the research question being asked. What...
- Q In a survey of 250 commuters, 180 were found to have a commuteof less than 30 minutes.Find the 90% confidence interval of the true proportion ofcommuters who have a commute...
- Q Do calculation by hand and in the statistical program ofchoice. Given this dataset:3,6,2,1,2,3,4Convert each of these values to a z-score.What percentage of cases would you expect to fall below 2?What score...
- Q An analyst at a local bank wonders if the age distribution ofcustomers coming for service at his branch in town is the same asat the branch located near the mall....
- Q The data below are the temperatures on randomly chosen daysduring a summer class and the number of absences on those days.Construct a 95% prediction interval for y, the number of...
- Q Prose rhythm is characterized as the occurrence of five-syllablesequences in long passages of text. This characterization may beused to assess the similarity among passages of text and sometimesthe identity of...
- Q A researcher was interested in the effects of different studymethods on learning, among a class of children. Following one ofthree methods, 6 students were divided into groups.Method 1 (book alone)Method...
- Q Why is this an example of spurious correlation? How do you know?Do not use the same example given from another student. Make sureyou read your classmates’ posts before submitting your...
- Q 1. You wish to test the following claim (Ha) at a significancelevel of ?=0.05. Ho:p1=p2 Ha:p1>p2You obtain 83% successes in a sample of size n1=305 from the firstpopulation. You obtain 78.7% successes...
- Q The chart below lists the sales in thousands of dollars based onthe advertising budget for that quarter. The regression equation isY' = 4.073 + 0.8351X. What is the correlationcoefficient?Advertising ($hunderds)Sales...
- Q Mr. Acosta, a sociologist, is doing a study to see if there is arelationship between the age of a young adult (18 to 35 years old)and the type of movie...
- Q You have been hired by a company as a Statistical Consultant,for the purpose of determining whether there is a significantdifference in the number of units produced by workers on Mondaysand...
- Q A developer wants to know if the houses in two differentneighborhoods were built at roughly the same time. She takes arandom sample of six houses from each neighborhood and finds...
- Q The table below lists maintenance cost vs. the age of cars for asample of seven cars. The goal was determine if there was acorrelation between the age of a car...
- Q This dataset includes the number of work hours for each project,the function point count for each project, and identifiers foroperating system, data management system, and programming languageutilized.Open the dataset pointworkload.csv...
- Q (1)Using the Matlab code developed in Software Assignment#1:a. Convert the code that generates the random number (H,T) withequal probabilities into a function called myBernolli(p, S) thattakes as an input the...
- Q Let X ~ Geometric (p) where 0 < p <1a) Show explicitly that this family is “very regular,” that is,that R0,R1,R2,R3,R4 hold.R 0 - different parameter values have different functions.R...
- Q Look online and find an article published within thepast 4 weeks that includes a reference to probabilities, means, orstandard deviations. These articles might be discussingweather events, investing outcomes, or sports...
- Q Distance3.41.84.62.33.15.50.73.0Damage26.217.831.323.127.536.014.122.3Distance2.64.32.11.16.14.83.8Damage19.631.324.017.343.236.426.1Interpret the slope by circling the correct answers andfilling in the blanks. See pp. 194-195 in the coursetext.“If the distance between the fire andnearest fire station [ increases |decreases ]...
- Q Distance3.41.84.62.33.15.50.73.0Damage26.217.831.323.127.536.014.122.3Distance2.64.32.11.16.14.83.8Damage19.631.324.017.343.236.426.1Generate the Simple linear regression resultsand Parameter estimates table in StatCrunch forthe least-squares regression equation and include them withyour submission.
- Q Use the given information to find the number of degrees of?freedom, the critical values chi Subscript Upper L Superscript 2and chi Subscript Upper R Superscript 2?, and the confidenceinterval estimate...
- Q Both Alice and Bob toss a fair coin three times. The probabilitythat Alice records a different numbers of heads than Bob is givenby A/B, where A and B are relatively...
- Q 5. The table below shows actual temperatures andpredicted temperatures for San Antonio from August 01 through15th.https://www.accuweather.com/en/us/san-antonio-tx/78205/august-weather/351198DayTemperature1100210039949851016100710181029103101031110412104131041410315100a. Decide which variable should be the independentvariable and which should be the dependent variable.b....
- Q 6. For accreditation purposes, we are concernedabout the general knowledge of UIW students about American Economy.An exam was completed by 5 freshman students per area of degreechoice in a total...
- Q 4. I have reviewed the midterm grades, and I amtrying to predict how well the class will do on the final exam. Thefrequency values are actual grades for the Summer...
- Q Most scientists use the p<.05 criterion to determine if theirfindings are significant. Describe cases where you would preferthem to be more lenient (e.g., p<.10) or cases where you preferthem to...
- Q Exercise 5.4Refer back to exercise 2.2. Suppose that you fit the model to 20data points and found that your F – value for testing the model isuseful is 49.75.Exercise 2.2A...
- Q The Australian BankingAssociation conducts a survey every five years into the status ofwomen in the banking industry, including aspects relating toworking hours. In the 1997 survey, which incorporated 705respondents, 211...
- Q In order to estimate the average electricity usage per month, asample of 125 residential customers were selected, and the monthlyelectricity usage was determined using the customers' meterreadings. Assume a population...
- Q Office Equipment, Inc.(OEI) leases automatic mailing machines to business customers inFort Wayne, Indiana. The company built its success on a reputationof providing timely maintenance and repair service. Each OEIservice contract...
- Q The Iowa Energy are scheduled to play against the Maine RedClaws in an upcoming game in the National Basketball AssociationDevelopmental League (NBA-DL). Because a player in the NBA-DL isstill developing...
- Q Faced with rising fax costs, a firm issued a guideline thattransmissions of 10 pages or more should be sent by 2-day mailinstead. Exceptions are allowed, but they want the average...
- Q The Wall Street Journal reported that of taxpayers with adjustedgross incomes between and itemized deductions on their federalincome tax return. The mean amount of deductions for thispopulation of taxpayers was...
- Q In a poll of593human resource? professionals,49.1?%said that body piercings and tattoos were big grooming redflags. Complete parts? (a) through? (d) below.?a) Among the593human resource professionals who were? surveyed, how many...
- Q When using r programming or statistical software:(A) From the summary, which variables seem useful for predictingchanges in independent variable?(B) For the purpose of variable selection, does the ANOVA tableprovide any...
- Q An educational psychologist has developed a mediation techniqueto reduce anxiety. The psychologist selected a sample of highanxiety students that are asked to do the mediation at two therapysessions a week...
- Q The following data represent acompany's yearly sales volume and its advertising expenditure overa period of 8 years. Sales (Millions)Advertising ($10,000)15321633183517341636193719392442To make sure the Excel regression package isinstalled.Click “Tools”,à“Add-Ins”àchoose “Analysis Toolpak” and...
- Q For small training sets variance may contribute more to theoverall error than bias. Sometimes this is handled by reducing thecomplexity of the model, even if the model is too simple....
- Q The prices of the 21? top-rated 28-inch direct view televisionsets are as follows. ?$340 ?$410 ?$510 ?$620 ?$710 ?$810 ?$860 360430 550 620 750 810 890 380 470 580 660...
- Q The manager of a supermarket chain wants to determine if thelocation of the product - where it is to be displayed - has anyeffect on the sale of a pet...
- Q To test whether students in a higher grade level will be lessdisruptive in class, a school psychologist records the number ofdocumented interruptions during one day of classes from nine localhigh...
- Q Iconic memory is a type of memory that holds visual informationfor about half a second (0.5 seconds). To demonstrate this type ofmemory, participants were shown three rows of four letters...
- Q Motor-Dexterity Test Motor-dexterity tests are often used inpsychological studies, especially in neuropsychology. For thistask, we are going to test motor-dexterity while looking for signsof frustration. First, take a clean pair...
- Q A survey was conducted among 92 men and 217 women and got theirBMI values. Among the 92 men, the average BMI is 24.4 with standarddeviation 3.4. Among the 217 women,...
- Q Question 3: Consider the contingency table from Question 2.Post-flight respiratory problem? YesNoRe-circulate Air (RA) 110405Do not re-circulate air (RAc) 108477A passenger just gets of a flight from San Francisco to...
- Q Delivery TimePercent customers looking for newspaper by timePercent undelivered at time6:00 AM15%38%6:15 AM5%21%6:30 AM8%22%6:45 AM6%14%7:00 AM15%7%7:15 AM12%6%7:30 AM16%4%7:45 AM3%3%8:00 AM5%3%"Anytime"15%0%The Herald marketing department is seeking to increasehome-delivery sales through an...
- Q You will perform an ANOVA test. For thehypothesis test make sure to report the following steps:Identify the null hypothesis, Ho, and the alternativehypothesis, Ha.Determine whether the hypothesis test is left-tailed,right-tailed,...
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