Basic Math question and answers for September 20, 2023
- Q Can two events A and B be independent of one another anddisjoint? explain what conditions are needed for this tohappen?
- Q Manufacturer A B C D25 23 25 2723 21 25 2621 23 25 2723 24 21 26To test whether the mean time needed to mix a batch of material isthe...
- Q Make Versus Buy Case ABC Ltd. is a manufacturing company engagedin the manufacturing of valves. They have been in the business forlast 3 years and have been manufacturing only one...
- Q Suppose the amount of time to finish assembling a component isexponentially distributed with an average of 2 minutes.(a) What is the probability that it takes more than 5 minutes toassemble...
- Q NEED ANSWER ASAP(Hypothesis testing)What do we need to consider when we try to select a test?Choose one of the tests; discuss your understandings of thattest.Use some examples to demonstrate your...
- Q A company wished to know if the training programme that theydevelopedfor a particular task was effective. 20 employees were timedperforming thetask before and after the training. The times were recorded...
- Q 1.) is there a difference between "2-way Chi-squared" and just"Chi-squared" or are they the same? 2.) How do you find themeasurement?
- Q Describe the use of data analytics in business intelligencesolutions, including financial, legal, privacy, and ethical issues.Explain how data analytics impact decision making withinorganizations.
- Q An IKEA “Tarva” bed frame is assembled with screws and Allenwrenches. The screws and wrenches for the Tarva kits are grabbed atrandom from large bins at the factory by two...
- Q The city of Laguna Beach operates two public parking lots. Theone on Ocean Drive can accommodate up to 125 cars and the one onRio Rancho can accommodate up to 130...
- Q Suppose X is a discrete random variable with mean ? and variance?^2. LetY = X + 1.(a) Derive E(Y ).(b) Derive V ar(Y ).
- Q Over the past several months, an adult patient has been treatedfor tetany (severe muscle spasms). This condition is associatedwith an average total calcium level below 6 mg/dl. Recently, thepatient's total...
- Q The following table provides summary statistics for theDurationSurgery based on whether or not patients contracted an SSIfrom the Seasonal Effect data set. One of the researchers iscurious whether there is...
- Q variable1 variable2-1.60263 6.666305.13511 22.397966.36533 48.044395.62218 33.73949-2.19935 13.133686.44037 34.074117.53576 57.432686.84911 46.18391-0.96507 2.31758-7.97987 66.451267.71148 60.122208.00414 69.34776-1.84249 -8.58487-6.64529 35.444693.52281 15.813266.12823 42.51683-8.02429 63.533221.93739 10.393061.60250 -1.673709.59542 92.445740.97873 -2.221447.61991 66.599486.35683 35.621674.60624 15.37388Correlation is used to discover...
- Q The lengths of pregnancies are normally distributed with a meanof267 days and a standard deviation of 15 days. a. Find theprobability of a pregnancy lasting308 days or longer. b. If...
- Q What is the probability, given a 52 card deck, of being dealt anAce of spades, an Ace of hearts, and Ace of clubs, in thatorder.
- Q Suppose we have the following data on variable X (independent)and variable Y (dependent):XY2700704130(SOLVE ALL BY HAND, NOT BY USING EXCEL)By hand, determine the simple regression equation relating Yand X.Calculate the...
- Q HOW DO YOU DETERMINE IF ITS TRUE OR FALSE WHEN DEALING WITHBINOMINAL VARIABLES
- Q The article “Application of Surgical Navigation to To-tal Hip Arthroplasty” (T. Ecker and S. Murphy, Journalof Engineering in Medicine, 2007:699–712) reportsthat in a sample of 113 people undergoing a certaintype...
- Q On the basis of a physical examination, a doctor determines theprobability of no tumour (event labelled C for‘clear’), a benign tumour (B) or a malignant tumour (M) as 0.7, 0.2and...
- Q a) If sample data are such that the null hypothesis is rejectedat the alpha=5% level of significance based upon a 2 tailed test,is H0 also rejected at the alpha=1% level...
- Q It is thought that the mean length of trout in lakes ina certain region is 20Inches. A sample of 46 trout from one particular lakehad a sample mean of 18.5...
- Q A random sample of 200 cars has 18 that are green in color. Whatis the confidence interval for the true proportion of green carsthat lie within a 95% confidence interval?
- Q Discuss the following in 175 words: How normal distributionsplay a significant role in managerial decision-making.
- Q The age distribution of the Canadian population and the agedistribution of a random sample of 455 residents in the Indiancommunity of a village are shown below.Age(years)Percent of CanadianPopulationObserved Numberin the...
- Q *1. The national norm for third graders on a standardized testof reading achievement is a mean score of 27 ? 4 . Racheldetermines the mean score on this test for...
- Q Construct a 95% confidence interval by hand for what proportionof students are vegan, if you took a random sample of 100 studentsand 3 were vegan.
- Q The following table shows ceremonial ranking and type of potterysherd for a random sample of 434 sherds at an archaeologicallocation.Ceremonial RankingCooking Jar SherdsDecorated Jar Sherds (Noncooking)Row TotalA8649135B9748145C7678154Column Total259175434Use a chi-square...
- Q 1a) Let an experiment consist of rolling three standard 6-sideddice.i) Compute the expected value of the sum of the rolls.ii) Compute the variance of the sum of the rolls.iii) If...
- Q Follow the instructions carefully. [20 marks] Question Samplingis the process of selecting a representative subset of observationsfrom a population to determine characteristics (i.e. the populationparameters) of the random variable under...
- Q Based on a smartphone? survey, assume that 41% of adults withsmartphones use them in theaters. In a separate survey of 209adults with? smartphones, it is found that 71 use them...
- Q In a poll to estimate presidential popularity, each person in arandom sample of 1,230 voters was asked to agree with one of thefollowing statements:The president is doing a good job.The...
- Q a picture of these three.(a) Circumcentre : Draw perpendicular bisectors of the threesides. The point where they meet is the Circumcentre. (b)Orthocentre : Draw the perpendiculars from the third vertex...
- Q Explain the difference between deterministic and statisticalmodels
- Q Mary Jones Tarik Mohammed Smith, Jim Tom O'Brian Victor Lindquist Chow, Vincent Wong, MarySome names are in the format ‘First Last’ and others ‘Last,First’. Write a function to extract the full names, in the format‘Last, First’,...
- Q Imagine that you are conducting an experiment in which eachparticipant is randomly assigned to one and only one level of theindependent variable throughout the course of the experiment. Whichterm below...
- Q At a recent transfer student event held at MPC, students wereasked their major field of study. A sample of the responsescollected follow: English, Engineering, Psychology, English,Computer Science, Engineering, Computer Science,...
- Q When can multiple optimal solutions can occur in linearprogramming problems? Explain.
- Q Burger Dome sells hamburgers, cheeseburgers, French fries, softdrinks, and milk shakes, as well as a limited number of specialtyitems and dessert selections. Although Burger Dome would like toserve each customer...
- Q Data 1. Clearly do it with nice handwriting you can useexcelDaySpeed (m/s)Power (kW)150.25260.38350.25450.25530.08640.14730.08860.38950.251060.381160.381240.141330.081430.081550.251640.141730.081880.641960.382040.142130.082260.382350.252440.142540.142620.042750.252860.382930.083030.0831100.97Q.1 Why is it “clearly not” Poisson? (a) Calculate summarystatistics for Data1 and use them to argue that...
- Q The time required for an automotive center to complete an oilchange service on an automobile approximately follows a normal?distribution, with a mean of 17 minutes and a standard deviation of2.5...
- Q Scenario:Assuming the data below is from a randomly sampled population ofPsychology Major’s and the scores represent Self-Esteem. All majorshave a mean of µ=15 and standard deviation of ?=5.Data:10, 12, 18,...
- Q Now that you have conducted a series of inferential statisticsto validate your claim. Discuss any three(3) possible concerns in business or statisticalaspects regarding the approach used here. Such that in...
- Q Use Minitab, R, or your preferred software forthis question.An exercise physiologist used skinfold measurements toestimate the total body fat, Y, expressed as a percentageof body weight, X1, for 19 participants...
- Q 2) The following is a sample of times (in minutes) between callsreceived at a technical support help line. 1.1, 1.6, 2.5, 2.6, 2.6,2.6, 2.6, 2.9, 2.9, 3.1, 3.1, 3.4, 3.4,...
- Q 1.Two variables have a positive non-linear correlation. Does thedependent variable increase or decrease as the independent variableincreases?A. Dependent variable would remain the sameB. Dependent variable increasesC. Cannot determine from information...
- Q (1 point) A recent report for a regional airline reported thatthe mean number of hours of flying time for its pilots is 66 hoursper month. This mean was based on...
- Q Question (statistics) (Data below) (to be done with EVIEWS)Millions of investors buy mutual funds, choosing from thousandsof possibilities. Some funds can be purchased directly from banksor other financial institutions (direct)...
- Q Medical Mutual Insurance investigates the cost of a routinevisit to family physicians' offices in the Rochester, New Yorkarea. The following is a list of family doctors in the region.Physicians should...
- Q In a tennis match, the first serve percentage is a keystatistic. Having an accurate (and fast) first serve is seen as animportant advantage to winning a match. Let theta be...
- Q Which are people more likely to do accidentally, put coloredclothes in with the white clothes wash, or white clothes in withthe colored clothes wash? Principia Martindale surveys 4800 people,and asks...
- Q I need to know how to properly complete this question step bystep in writing as well as using the ti-84?:Random and independent samples of 900 men and 1200 women wereasked...
- Q Use the case below to answer the following question(s) (Totalmarks = 100)A certain restaurant located in a resort community is owned andoperated by Karen Payne. The restaurant just completed its...
- Q Two independent methods of forecasting based on judgment andexperience have been prepared each month for the past 10 months.The forecasts and actual sales are as follows:MonthSalesForecast 1Forecast 218458158202835835825379582082548208307955795785780683578577178058107858850780785984080583010805815825 a. Compute the...
- Q Hypothesis Test: Difference Between MeansSample A: 35 Observations, Mean = 10.255, Variance=0.310Sample B : 20 Observations, Mean= 9.004, Variance= 0.831H0: ?A – ?B= 0H1:?A – ?B ? 0alpha=0.05Can you run...
- Q More images for certain company produces and sells frozen pizzasto public schools throughout the eastern United States. Using avery aggressive marketing strategy, they have been able to increasetheir annual revenue...
- Q QUESTION 1A sample of weights of 50 boxes of cereal yield a sample average of17 ounces. What would be the margin of error for a 90% CI of theaverage weight...
- Q Recall that Benford's Law claims that numbers chosen from verylarge data files tend to have "1" as the first nonzero digitdisproportionately often. In fact, research has shown that if yourandomly...
- Q A student researcher compares the heights of men and women fromthe student body of a certain college in order to estimate thedifference in their mean heights. A random sample of...
- Q One of the major measures of the quality of service provided byany organization is the speed with which it responds to customercomplaints. A large family-held department store selling furnitureand flooring,...
- Q A manufacturer claims that the calling range (in feet) of its900-MHz cordless telephone is greater than that of its leadingcompetitor. A sample of 19 phones from the manufacturer had a...
- Q DogBites Self-Esteem Shoe Extraversion 40yd 13 6 8 90 5.5 3 21 9 24 4.6 20 2 15 98 6.3 7 15 11 55 5.4 9 13 12 59 5.6 2 20 9 32 4.4 13 6 11 87 6.8 15 2 9 97 6.7 5 23 10 23 4.6 6 11 9 50 5.2 19 4 11 84 6.1 16 5 9 80 6.6 6 22 9 21 4.5 4 19 13 26 4.8Give me the regression equation and the results of thestatistical test (including null hypothesis tested and the decisionreached) for this data (include null and decision) Want to predictthe number of...
- Q An urn contains 5 red balls, 4 green balls and 4 yellow balls,for a total of 13 balls.if five balls are randomly selected without replacement, what isthe probability of selecting...
- Q Guessing on Exams Suppose, you are taking an exam with 10questions and you are required to get 7 or more right answers topass.With a 10-question true/false test, what is the...
- Q The mean caffeine content ? of a certain energy drink is underexamination. A measure taken on a random sample of size n = 16yieldsx? = 2.4 g/l.(a) Assuming that the...
- Q 1. Perform the following hypothesis test using thecritical value (traditional) method. Be sure to state thenull and alternative hypotheses, identify the critical value,calculate the test statistic, compare the test statistic...
- Q The overall odds ratio for the association between breastcancer and smoking status is 3.7 (95% confidenceinterval=2.1-5.2).a- Interpret the odds ratio and the95% confidence interval between breast cancer and smoking statuswith...
- Q To study the physical fitness of a sample of 28 people, the databelow were collected representing the number of sit-ups that aperson could do in one minute.42, 70, 81, 48,...
- Q Study the data below and draw four charts to represent the data.Also calculate the descriptive statistics for the data and analysethe results. Also generate frequency curve graphs for incomedistribution of...
- 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 2. The strength of an association is one of the criteria forevaluating the cause and effect relationship between an exposureand outcome. Which of the following is a measure of the...
- Q 4. Indicate which variable is the independent and dependent foreach pair. If either could be the independent, answer “reciprocal.”If the two variables do not seem related, answer “unrelated.”a) Property inspections...
- Q A random sample is selected from a population with mean? = 102 and standard deviation ? = 10. Determinethe mean and standard deviation of the x samplingdistribution for each of...
- Q Data collected by a price reporting agency from more than 90,000gasoline and convenience stores throughout the U.S. showed that theaverage price for a gallon of unleaded gasoline was $3.28. Thefollowing...
- Q The data below are yields for two different types of corn seedthat were used on adjacent plots of land. Assume that the data aresimple random samples and that the differences...
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