Basic Math question and answers for September 29, 2023
- Q Prove that if two of the opposite sides of a quadrilateral arerespectively the greatest and the least sides of the quadrilateral,then the angles adjacent to the least are greater than...
- Q Let A and B two events defined on a sample space . Show that Aand Bare independent if and only if their characteristic functions 1Aand 1B are independent random variables.
- Q Four servers are currently busy, each serving a differentcustomer. You are the next in line to be served, as soon as oneserver becomes available. The servers have different levels ofexperience,...
- Q Using the Grubb's test, decide whether the value 217 should berejected from the set of results 191, 217, 202, 205, 195.
- Q As a researcher, you will be considering the relationshipsbetween variables regularly. Linear correlation is the most basicrelationship that may exist between two variables. This assignmentwill you give the opportunity to...
- Q A pilot study is run to investigate the effect of a lifestyleintervention designed to increase medication adherence in patientswith HIV. Medication adherence is measured as the percentage ofprescribed pills that...
- Q Suppose the heights of 18-year-old men are approximatelynormally distributed, with mean 68 inches and standarddeviation 2 inches.(a) What is the probability that an 18-year-old man selected atrandom is between 67...
- Q Using R calculate the following properties of the DataSet given below:(a) The average (mean) value for each of the four features(b)(b) the standard deviation for each of the features(c) repeat...
- Q 6. The following is from the General Social Survey, 2016.Interpret the following frequency distribution and the mode,median, or mean, for the variable CCTV, which asks if the Americangovernment should have...
- Q True or False:a.) In a statistical study, the random variable X = 1, if thehouse is colonial and X = 0 if the house is not colonial, then itcan be...
- Q A study is conducted among first year undergraduate studentsin a US College of Nursing. From a list of these students, every10th student is selected for an interview. Which of the...
- Q 1.The heights of adult men in America are normally distributed,with a mean of 69.3 inches and a standard deviation of 2.63 inches.The heights of adult women in America are also...
- Q Many consumers pay careful attention to stated nutritionalcontents on packaged foods when making purchases, so it isimportant that the information on packages be accurate. Thedistribution of calorie content has been...
- Q Do streams with vegetated buffers (natural vegetation growthalong the stream banks) have lower total phosphorus concentrations[TP] than streams without vegetated stream buffers (and if so, bywhat magnitude)? We have randomly...
- Q The average number of accidents at controlled intersections peryear is 4.1. Is this average more for intersections with camerasinstalled? The 43 randomly observed intersections with camerasinstalled had an average of...
- Q A recent survey was conducted to determine how people consumetheir news. According to this? survey, 60?% of men preferredgetting their news from television. The survey also indicates that42?% of the...
- Q Consider the quarterly electricity production for years1-4:Year 1 2 3 4Q1 99 120 139 160Q2 88 108 127 148Q3 93 111 131 150Q4 111 130 152 170(a) Estimate the trend...
- Q 26. Calculate each value requested for the following set ofscores.a. ?X X Yb. ?Y 1 6c. ?X?Y 3 0d. ?XY 0 –22 –427. Use summation notation to express each of...
- Q f(x,y)=(xcos(t)?ysin(t),xsin(t)+ycos(t))f(x,y)=(xcos?(t)?ysin?(t),xsin?(t)+ycos?(t))defines rotation around the origin through angle tt in theCartesian plane R2R2. If one rotates a point (x,y)?R2(x,y)?R2around the origin through angle tt, then f(x,y)f(x,y) is theresult.Let (a,b)?R2(a,b)?R2 be an...
- Q Each applicant has a score. If there are a total of n applicantsthen each applicant whose score is above sn is accepted, where s1 =.2, s2 = .4, sn =...
- Q Suppose that the Canadian stock market return, denoted by arandom variable X, varies within {?0.2, ?0.1, 0, 0.1, 0.2, 0.4,0.9}, and suppose that P (X = x) = (1 ?...
- Q The following frequency distribution shows the number ofcustomers who had an oil change at a particular Jiffy Lubefranchise for the past 40 days.Number of customersFrequency (days)Relative FrequencyCumulativeRelativeFrequency25 to 34335 to...
- Q A) Body mass index (BMI) in children is approximately normallydistributed with a mean of 24.5 and a standard deviation of 6.2. ABMI between 25 and 30 is considered overweight. What...
- Q In the description of the following experiment, determine theexperimental factor. During a study testing a new vaccine for Zikavirus, the research team grouped the volunteers enrolled for thetest into Group...
- Q Which of these situations fit the conditions for usingBernoulli? trials? Explain. ?a) You are rolling 8 dice and need toget at least three 1s to win the game. ?b) We...
- Q PLEASE PROVIDE ANSWERFOR DEDICATED QUEUES: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...
- Q A simple random sample of size n=36 is obtained from apopulation with mean=89 and standard deviation = 6?(c) What is P ( x overbar less than or equal to 86.65)??...
- Q Say we have the following hypothesesH0: ? <50HA: ? > 50We know that the population standard deviation is 8. If wecollect a sample of 64 observations and want ? =...
- Q For questions 1-5, X1, X2, ... , X23 is a random sample from adistribution with mean ? = -1.02 and variance ?2 = 0.62.For questions 5-10, X1, X2, ... ,...
- Q Suppose you have to calculate the number of poppingsounds popcorn does in each five-second interval. Forexample:Interval# of popping sounds1-5 sec76-10 sec611-15 sec5Discuss what type of variables you have, such asquantitative...
- Q Test the claim that the mean GPA of night students is smallerthan 3.2 at the .025 significance level.Based on a sample of 75 people, the sample mean GPA was 3.18with...
- Q Grades on a standardized test are known to have a mean of 500for students in the US. The test is administered to 600 randomlyselected students in Florida. In this subsample,...
- Q Perfect Properties have collected sales data from property salesin the northern suburbs of Cape Town for the past month. In thetable below you are supplied with the selling price (SP)...
- Q Stock prices: Following are the closing pricesof a particular stock for each trading day in May and June of arecent year.May884.74900.68900.62886.25820.43875.04877.00871.98879.81890.22879.73864.64859.70859.10867.63880.37877.07873.65866.20869.79829.61June906.97908.53909.18903.87915.89887.10877.53880.23871.48873.63857.23861.55845.72871.22870.76868.31881.27873.32882.79(a) Find the mean and median price in May. Round...
- Q A person with a cough is a persona non grata on airplanes,elevators, or at the theater. In theaters especially, theirritation level rises with each muffled explosion. According toDr. Brian Carlin,...
- Q House prices: The following table presentsprices, in thousands of dollars, of single-family homes for 20 ofthe 25 largest metropolitan areas in the United States for thethird quarter of 2012 and...
- Q Beer: The following table presents the numberof active breweries for samples of states located east and west ofthe Mississippi River.EastWestStateNumber of BreweriesStateNumber of BreweriesFlorida47Alaska17South Carolina14Arizona31Georgia22California305Connecticut18Iowa21Maryland23Louisiana6North Carolina46Minnesota41New Hampshire16Texas37Massachusetts40Tennessee19Vermont20a) Find the mean...
- Q have to come up with examples to measure happiness, depression, andanxiety at ordinal, nominal, ratio, and interval level. im havingissues because i can only think of examples for measuring thesecharectaristics...
- Q 1. A researcher studying the lifespan of a certain species ofbacteria. A preliminary sample of 35 bacteria reveals a sample meanof ¯ x = 64 x ¯ = 64 hours...
- Q For each measurement listed below replace the “?” with the mostappropriate level or scale of measurement: nominal, ordinal,interval, ratio.MeasurementLevel1Eye Color: Brown, Green, Blue?2Yardstick marked in centimeters?3Political Party: Democrat, Libertarian Republican?4Type...
- Q A) Fill in the blanks. According to estimates by the office ofthe Treasury Inspector General of IRS, approximately 0.07 of thetax returns filed are fraudulent or will contain errors that...
- Q Problem 10-07 (Algorithmic)Aggie Power Generation supplies electrical power to residentialcustomers for many U.S. cities. Its main power generation plantsare located in Los Angeles, Tulsa, and Seattle. The following tableshows Aggie...
- Q Roll two dice at the same time, and define a randomvariable X as the sum of the two faces observed. Determine the CDFand PMF of X. Sketch the CDF.
- Q To obtain information on the corrosion-resistance properties ofa certain type of steel conduit, 45 specimens are buried in soilfor a 2-year period. The maximum penetration (in mils) for eachspecimen is...
- Q The U.S. Department of Transportation, National Highway TrafficSafety Administration, reported that 77% of all fatally injuredautomobile drivers were intoxicated. A random sample of 33 recordsof automobile driver fatalities in Kit...
- Q What is the probability that at least one of a pair of fair dicelands of 5, given that the sum of the dice is 9?
- Q 1. ) An instructor believes that students do not retain as muchinformation from a lecture on a Friday compared to a Monday. Totest this belief, the instructor teaches a small...
- Q I will be grateful to be answered using excellYou have to include the Excel formulas used.In an evaluation of progress, made to 400 managers, the averageof the scores was 70...
- Q Anystate Auto Insurance Company took a random sample of 374insurance claims paid out during a 1-year period. The average claimpaid was $1530. Assume ? = $230. Find a 0.90 confidence...
- Q Three years? ago, the mean price of an existing? single-familyhome was $243,742. A real estate broker believes that existing homeprices in her neighborhood are higher.a. determine the null and alternative...
- Q The FBI wants to determine the effectiveness of their 10Most Wanted list. To do so, they need to find out the fractionof people who appear on the list that are...
- Q A pharmaceutical manufacturer wants to investigate thebioactivity of a new drug. A completely randomized single-factorexperiment was conducted with three dosage levels, and thefollowing results were obtained. Use R to run...
- Q Elementary Statistics, 10th Edition, by Mario Triola; chapter 2,section 2-2, question 18, page 50:Loaded die: the author drilled a hole in a die and filled itwith a lead weight, then...
- Q Iron-deficiency anemia is the most common form of malnutritionin developing countries, affecting about 50% of children and womenand 25% of men. Iron pots for cooking foods had traditionally beenused in...
- Q Suppose a bucket contains one white and one black ball. We pickout a ball equally likely at random and then put the ball backalong with another of the same color....
- Q a data set mean 14 and standard deviation 2. Approximately 68%of the observations lie between ____ and _____
- Q Calculate the mean and standard deviation and interpret yourfindings for the following set of data showing the diastolic bloodpressure measurements for a sample of 9 individuals: 61, 63, 64,69, 71,...
- Q Flu Vaccine: The Center for Disease Control(CDC) claims that the flu vaccine is effective in reducing theprobability of getting the flu. They conduct a trial on 3000people. The results are...
- Q How to do this in ti84 plus calculator in shortestpossible wayThe annual per capita consumption of bottled water was 32.8gallons. Assume that the per capita consumption of bottled water isapproximately...
- Q Your leader wants you to evaluate the difference in cycle timebetween three different offices. Describe the steps you would takein the evaluation in order to provide a report so the...
- Q In a recent study on world? happiness, participants were askedto evaluate their current lives on a scale from 0 to? 10, where 0represents the worst possible life and 10 represents...
- Q In the country of United States of Heightlandia, the heightmeasurements of ten-year-old children are approximately normallydistributed with a mean of 55.6 inches, and standard deviation of3.4 inches.A) What is the...
- Q In350 words, provide a definition of levels of measurements. Thenexplain why they are important.
- Q The systolic blood pressure of adults in the USA is nearlynormally distributed with a mean of 117 and standard deviation of21 .Someone qualifies as having Stage 2 high blood pressure...
- Q A box in a certain supply room contains four 40-W lightbulbs,five 60-W bulbs, and seven 75-W bulbs. Suppose that three bulbs arerandomly selected. (Round your answers to four decimal places.)(a)...
- Q Question 7 options:The owner of the Britten's Egg Farm wants to estimate the meannumber of eggs produced per chicken. A representativerandom sample of 25 chickens show they produce an average of...
- Q The distribution of online sale price for four-year-oldHarley-Davidson touring motorcycles is approximately Normallydistributed with a mean of $15,000 and a standard deviation of$4,000.(A) Mr. Rampal plans to spend between $9,000...
- Q For the year 2009, the table below gives the percent of peopleliving below the poverty line in the 26 states east of theMississippi River. Answer the following questions based on...
- Q To demonstrate flavor aversion learning (that is, learning todislike a flavor that is associated with becoming sick),researchers gave one group of laboratory rats an injection oflithium chloride immediately following consumption...
- Q With one method of a procedure called acceptance sampling, asample of items is randomly selected without replacement and theentire batch is accepted if every item in the sample is okay....
- Q suppose you want to determine the mean number of cansof soda drunk each month by students in their twenties at yourschool. Describe a possible sampling method in three to fivecomplete...
- Q In a survey of? four-year colleges and? universities, it wasfound that 255 offered a liberal arts degree. 110 offered acomputer engineering degree. 481 offered a nursing degree. 30offered a liberal...
- Q I have heard students say in the past "I hope this teachergrades on a curve." What do they mean by this? Is it beneficial toyou or not?
- Q 2M2_IND3. Prices of diamond jewelry are based on the “4Cs”ofdiamonds: cut, color, clarity, and carat. A jeweler is trying toestimate the price of diamond earrings based on color, carats, andclarity....
- Q Whywas the US constitution drafted?
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