Basic Math question and answers for September 19, 2023
- Q Per the textbook, to eliminate or reduce non-value-added work isa core step in improving profitability or efficiency of thebusiness process. Give your opinion on whether or not you agree ordisagree...
- Q Bayesian analysis is a probabilistic classification method based onBayes' theorem(postulated by an English Mathematician named Thomas Bayes). Insummary, theBayesian theory rests on the belief that the evidence about thetrue state...
- Q bag contains 7 red marbles, 5 white marbles, and 8 blue marbles.You draw 5 marbles out at random, without replacement. What is theprobability that all the marbles are red?The probability...
- Q The company Dilmart has 8,000 pieces in inventory. The averagedollar value of these pieces is $ 10.79 with a standard deviationequal to $ 3.34. Suppose the inventory manager selected a...
- Q A psychologist would like to examine how the rate ofpresentation affects people’s ability to memorize a list of words.A list of 20 words is prepared. For one group of participants...
- Q A radio tube inserted into a system has probability 0.2 oflasting 500 hours. 20 tubes are tested.1. Find probability that exactly that 'k' of these tubes willlast more than 500...
- Q Pension Plan Job ClassPlan APlan BPlan C Supervisor222621 Clerical414721 Labor396330 H0: Pension plan preference andjob class are not related. H1: Pension plan preference andjob class are related. Reject H0 if??2 > _____________ ??2 =____________
- Q The Lawnpoke Golf Association (LGA) has established rules thatmanufacturers of golf equipment must meet for their products to beacceptable for LGA events. BatOutaHell Balls uses a proprietaryprocess to produce balls...
- Q In Born together—Reared apart: the Landmark Minnesota twinstudy (2012), Nancy Segal discusses the efforts of researchpsychologists at the University of Minnesota to understandsimilarities and differences between twins by studying sets...
- Q Given that xx is a random variable having a Poissondistribution, compute the following:(a) P(x=1)P(x=1) when ?=4.5?=4.5P(x)=P(x)=(b) P(x?8)P(x?8)when ?=0.5?=0.5P(x)=P(x)=(c) P(x>7)P(x>7) when ?=4?=4P(x)=P(x)=(d) P(x<1)P(x<1) when ?=1?=1P(x)=P(x)=
- Q Altira Corporation uses a periodic inventory system. Thefollowing information related to its merchandise inventory duringthe month of August 2018 is available:Aug.1Inventory on hand—10,000 units; cost $8.00 each.8Purchased 26,000 units for...
- Q An athletic footwear company is attempting to estimate the salesthat will result from a television advertisement campaign of itsnew athletic shoe. The contribution to earnings from each pair ofshoes sold...
- Q Check in each case whether the given function can serve as theprobability distribution of an appropriate random variable. (a)f(x) = (2 x)/4 for x = 0, 1, 2; (b) f(x)...
- Q Thirty-one small communities in Connecticut (population near10,000 each) gave an average of x = 138.5 reported casesof larceny per year. Assume that ? is known to be 44.1cases per year.(a)...
- Q You are drawing 3 cards from a deck of 52.a) What is the probability you draw an ace of spades, ace ofhearts, and an ace of clubs in that orderb)...
- Q The average mpg usage for a 2009 Toyota Prius for a sample of 10tanks of gas was 45.5 with a standard deviation of 1.8. For a 2009Honda Insight, the average...
- Q In probability theory, a conditional probability measures theprobability of an event given another event has occurred. Theconditional probability of A given B, denoted by P(A|B), is definedby P(A|B) = P(A...
- Q Use the following information to answer the next threequestions. Civil engineers collected data from one area of Calgaryon the amount of salt (in tons) used to keep highways drivableduring a...
- Q Support of Background Checks by PoliticalParty: In April of 2013, the U.S. Senate did not pass abill to expand background checks to all gun sales despite popularapproval of the idea....
- Q A clinical trial is conducted comparing a new (investigational)analgesic drug to one already on the market (Tylenol) for arthritispain. Participants were randomly assigned to only one of the twotreatment groups...
- Q 1) One out of every 92 tax returns that a tax auditor examinesrequires an audit. If 50 returns are selected at random, what isthe probability that less than 3 will...
- Q Some people say if you want to make money after you graduatethat you should major in something echnical." A survey of 1400recent graduates showed that students who had taken two...
- Q Tom Sevits is the owner of the Appliance Patch. Recently Tomobserved a difference in the dollar value of sales between the menand women he employs as sales associates. A sample...
- Q Studies have shown that the frequency with which shoppers browseInternet retailers is related to the frequency with which theyactually purchase products and/or services online. The followingdata show respondents age and...
- Q A study of fox rabies in a country gave the followinginformation about different regions and the occurrence of rabies ineach region. A random sample ofn1 = 16locations in region I...
- Q Finish times (to the nearest hour) for 10 dogsled teams areshown below.Make a frequency table showing class limits, class boundaries,midpoints, frequency, relative frequencies, and cumulativefrequencies. Use three classes.(Round your answer...
- Q Find and sketch the critical value(s) and the rejection regionfor a left-tailed t-test with ? =0.02 and n=42.
- Q RESUBMITTING AS PREVIOUS SUBMISSION BY ANONYMOUS WASINCORRECTThe accompanying tablecontains the service ratings of 14 different Internet and TVproviders. Level of significance is .10. Complete parts? (a)through? (d) belowDetermine the TTestDetermine...
- Q You are at a wetland site. You have been instructed to test forchromium contamination. Suppose that a regulatory agency hasdetermined that a population mean chromium concentration equal to 7mg/kg characterizes...
- Q We work for Cola Company and there have been some discussions onwhich pressure setting is best for filling out bottles. If weoverfill the bottles then we are spending money we...
- Q Please answer part a) through part d) of the question below.Thank you.Question 3A tobacco refinery has four methods of measuring pH. To testthefour methods, a supervisor randomly assigns each of...
- Q Note that there are no correct answers per sec.Each student is asked to respond based on his or her subjectiveevaluation. No calculations are required.Each problem has individual, team, and class...
- Q At CES 2019, L’Oreal won the award for best innovation inwearable technology for their product, My Skin Track pH. Thescientific and medical communities have long known the link betweenskin pH...
- Q What price do farmers get for their watermelon crops? In thethird week of July, a random sample of 39 farming regions gave asample mean of x = $6.88 per 100...
- Q The Thomas Supply Company Inc. is a distributor of gas-poweredgenerators. As with any business, the length of time customers taketo pay their invoices is important. Listed below, arranged fromsmallest to...
- Q What is the expectation for the number of face cards (aces notincluded) when 10 cards are drawn, with replacement, from astandard deck
- Q Run the following ANOVA analysis in excel and interpret yourfindings. Upload your screen shots of the steps you took in runningthe analysis in excel.Treatment 1Treatment 2Treatment 3016145018325
- Q For some reason people care about how acidic fresh water is. Tworesearchers conducted a study of15 mountain lakes in the Southern Alps; any lake that has a pHgreater than 6...
- Q Ronald has developed a 10-second test for strep throat. Wantingto capitalize on his discovery, he decides to open up a drive-upMcClinic on which a customer's throat is swabbed by a...
- Q A Betting GameYou roll a die. If an odd number comesup, you lose. If you get a 6, you win $60. If it is an even numberother than 6, you...
- Q Let ?x denote the proportion of households in some county with xcars. Suppose ?1 = 0.32, ?2 = 0.38, ?3 = 0.1, ?4 = 0.02, ?5 = 0.01and all the...
- Q You wish to test the following claim (HaHa) at a significancelevel of ?=0.10?=0.10. Ho:?=61.5Ho:?=61.5 Ha:?<61.5Ha:?<61.5You believe the population is normally distributed, but you do notknow the standard deviation. You obtain...
- Q Selling Price LivingArea (Sq Feet) No. Bathrooms NoBedrooms Age (Years)$240,000 2,022 2.5 3 20$235,000 1,578 2 3 20$500,075 3,400 3 3 20$240,000 1,744 2.5 3 20$270,000 2,560 2.5 3 20$225,000 1,398 2.5 3 20$280,000 2,494 2.5 3 20$225,000 2,208 2.5 4 20$248,220 2,550 2.5 3 20$275,000 1,812 2.5 2 20$137,000 1,290 1 2 20$150,000 1,172 2 2 20$649,000 4,128 3.5 3 20$195,000 1,816 2.5 3 97$373,200 2,628 2.5 4 20$169,450 1,254 2.5 3 20$144,200 1,660 1.5 4 20$189,900 1,850 1.5 3 20$166,000 1,258 2 3 20$160,000 1,219 2 3 20$327,355 1,850 2.5 3 20$247,000 2,103 2.5 3 20$318,000 1,806 2.5 3 20$341,000 1,674 1.5 2 17$288,650 2,242 2.5 3 20$157,000 1,408 1.5 3 20$449,000 3,457 2.5 3 21$142,000 1,728 1.5 3 21$389,000 2,354 2.5 3 21$476,000 2,246 2.5 3 21$249,230 1,902 2.5 2 21$139,900 1,178 1 3 21$301,900 2,896 3.5 4 21$425,000 2,457 3 3 41$121,000 936 1 3 50$150,000 934 1 2 21$138,000 1,279 1 3 21$199,900 1,888 2 3 26$145,000 1,686 1.5 4 21$465,000 2,310 3 2 21$158,000 1,200 1.5 3 21 Develop a multiple linear regression model to predict the price ofa house using the square feet of living area, number of...
- Q n a research project, researchers collected demographic andhealth data from a sample of elderly residents in the community. Toexamine any possible gender differences in their sample, they wantto see if...
- Q Last week, 108 cars received parking violations in the greenparking lot. Of these, 27 had unpaid parking tickets from aprevious violation. Assuming that last week was a random sample ofall...
- Q Suppose a researcher is collecting data about the amount of sodaAmericans consume in one day. If the researcher was to gather twoseparate representative samples from the population, differencesmay exist between...
- Q Suppose that a population of brakes supplied has a mean stoppingdistance, when the brake is applied fully to a vehicle traveling at75 mph is 268 feet. Population standard deviation is...
- Q A psychologist is interested in the mean IQ score of a givengroup of children. It is known that the IQ scores of the group havea standard deviation of 11. The...
- Q (A) Three marksmen fire simultaneously and independently at atarget. What is the probability of the target being hit at leastonce, given that marksman one hits a target nine times out...
- Q M3_A5. A political polling organization has been hired toconduct a poll of likely voters prior to an upcoming election. Eachvoter is to be interviewed in person. It is known that...
- Q Suppose you work for a pharmaceutical company that is testing anew drug to treat ulcerative colitis. You conduct a random sampleof 31 patients on the new drug and 10 of...
- Q a) Explain briefly what this means in practice that the lengthof the pipes is expected to be µ = 12. What is the probability thata randomly selected pipe is longer...
- Q Can any linear regression model be checked for model adequacy bystatistical testing for lack of fit or goodness of fit? Why or whynot? Please provide your answer with detailed justification...
- Q 4. The owner of Bun ‘N’ Run Hamburgers wishes to compare thesales per day at two locations. The mean number sold for 10randomly selected days at the Northside site was...
- Q The following is the regression output for a study on seriouscrime rates in cities in the United States. The data was collectedin the 1970s. AREA is the size of the...
- Q 1. Consider simple regression model (one independentvariable)a) How do you find a confidence interval for the coefficient ofX?b) How do you conduct a test if the coefficient of X is...
- Q Use this scenario to answer questions below.The Collins Research Crew (CRC) is interested in examining thenumber of vape/smoking stores (i.e. stores that sell vaping andcigarette/cigar smoking products) in low-income neighborhoodscompared...
- Q A local grocery store wants to predict the monthly sales indollars. The manager believes that the amount of newspaperadvertising significantly affects the store sales. The managerrandomly selects 10 months of...
- Q Assume that the readings at freezing on a batch of thermometersare normally distributed with a mean of 0°C and a standarddeviation of 1.00°C.A single thermometer is randomly selected and tested....
- Q In a study at a large hospital the researcher wants to assurethat male nurses are adequately represented. At this hospital 5% ofthe nurses are male. The researcher separates the nurses...
- Q THE SAMPLE STATISTICS ARE GIVEN BELOW. ASSUME THE POPULATIONVARIANCES ARE NOT EQUAL USE a=0.01n1=18 n2=13X1= 785 X2=770S1=40 S2=25PLEASE NOTE THAT THE X'S HAVE A BAR OVER THEM
- Q A car company claims to only have a carbon dioxide emissions of.7. You think it’s higher. You collect 100 cars and test the carbondioxide. You find an average of .75...
- Q Problem 1. A boy has a fever after coming home in the afternoon.His mother thinks that it could be related to the following threepossible reasons: A : He plays football...
- Q 7. Dave’s Pizza periodically has a special week-long sale. Aspart of the advertising campaign Dave’sruns one or more television commercials during the weekendpreceding the sale. Data from a sample of4...
- Q The first few problems ask you to "describe" a random variable,which means:Give the sample space S (the result of the random experiment,from which the output of the random variable is...
- Q Recall that "very satisfied" customers give the XYZ-Box videogame system a rating that is at least 42. Suppose that themanufacturer of the XYZ-Box wishes to use the random sample of...
- Q Provide formula for effect sizes and step-by-stepsolution by hand or software.A researcher is studying the effects of inserting questions intoinstructional material for learning. There is doubt whether thesequestions would be...
- Q The life in hours of a thermocouple used in a furnace is knownto be ap-proximately normally distributed, with standard deviation?= 20 hours. Arandom sample of 15 thermocouples resulted in he...
- Q Steve is the director of operations for a diamond company. Thecompany is considering whether to launch a new product? line, whichwill require building a new facility. The research required toproduce...
- Q How many 3-digit numbers can we make using the digits 1, 2, 3,4, 5, 6 without repetitions? How about with repetitions (meaningdifferent digits can hold the same number; e.g., 223...
- Q Conditional Probability Problem: An urn contains 5 red balls, 4green balls, and 4 yellow balls for a total of 13 balls. If 5 ballsare randomly selected without replacement what is...
- Q I'm using 2005 NFL stats to come up with a multiple linearregression analysis models with the winning percentage being thedependent variable. My question would be, what are the mostsignificant variables...
- Q What is a research question i can use two-way ANOVA to figure out?And what is the solution to it.
- Q The Business School atState University currently has three parking lots, each containing155 spaces. Two hundred faculty members have been assigned to eachlot. On a peak day, an average of 70%...
- Q Do College students who have volunteered for community servicework differ from those who have not? A study obtained data from 57students who had done service work and 17 who had...
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