Basic Math question and answers for August 29, 2023
- Q Please correct chosen answers if incorrect.22) d23) c24) c22) Which of the following is not true regarding eventrates:a. an event can be anything such as Chicago Cubs winning theWorld Seriesb....
- Q An engineer has designed a valve that will regulate waterpressure on an automobile engine. The valve was tested on 150engines and the mean pressure was 4.0 pounds/square inch (psi).Assume the...
- Q Find the following probabilities.A.) P(X=5), X FOLLOWING A BINOMIAL DISTRIBUTION, WITH N=50 ANDP=.7.B.) P(X = 5), X following a Uniform distribution on the interval[3,7].c.) P(X = 5), X following a...
- Q Problem Set 3: One-Way randomized ANOVAResearch Scenario: A health psychologist is looking into theeffects of different kinds of exercise on stress. She dividesvolunteers into three exercise groups: high-intensity intervaltraining (HIIT)...
- Q Fully describe how to use the uniï¬ed approach for a Poissondistribution describing signal and background events. Illustratethis by constructing a 90% conï¬dence level interval for the numberof observed events given...
- Q Number of Certified Organic Farmsin the United States, 2001–2008YearFarms20016,37520026,73020037,44120047,42520057,88220068,758200710,297200812,019(a) Use Excel, MegaStat, or MINITAB to fitthree trends (linear, quadratic, exponential) to the time series.(A negative value should be indicated by...
- Q 3.[10 marks] Asample survey of 54 discount brokers showed that the meanprice charged for atrade of 100shares at $50 per share was $33.77 and a sample standard deviationof $15.a.   [3] Develop...
- Q To identify regional groupings of market segments it is usefulto use which of the following research tools? Select one: a.Cluster analysis b. Factor analysis c. Simple random sampling d.Open-ended questionsThe...
- Q You wish to test the following claim ( H a ) at a significancelevel of α = 0.002 . H o : p 1 = p 2 H a :...
- Q Use the table below to answer questions 4.5 – 4.7: This tablecontains the same client data as the first table. This time,though, the instructor is interested in knowing how his...
- Q 2. An experiment was conducted by a physiologist to determinewhether exercise improves the human immune system. Thirty subjectsvolunteered to participate in the study. The amount ofimmunoglobulin known as IgG (an...
- Q There are 3 SPSS outputs in this homework assignment. Thequestions for each output are listed below. Please type youranswers into this word document and submit it as an attachment inthe...
- Q A physician with a practice is currently serving 280 patients.The physician would like to administer a survey to his patients tomeasure their satisfaction level with his practice. A random sampleof...
- Q 7. A certain drug is used to treatasthma. In a clinical trial of the​ drug, 20 of 286 treatedsubjects experienced headaches​ (based on data from the​manufacturer). The accompanying calculator display...
- Q Collect data from 30 people from your work, school,neighborhood, family, or other group. Ask a quantitative question,such as, “How many pets do you have?†or “How many college classeshave you...
- Q Problem 1The dependent variable is assumed to be values of a land.a) Use the Excel regression tool to do the linear regression,and provide the“Line Fit Plots†(which is provided in...
- Q Bass - Samples: The bass in Clear Lake haveweights that are normally distributed with a mean of 2.2 pounds anda standard deviation of 0.6 pounds. Suppose you catch astringer of...
- Q Explain the difference between coorelational,quasi-experimental, and true-experimental designs.
- Q Please describe your experience with professional grant writingor publishing your work in peer reviewed journals
- Q Define confidence belt and credible set. What is theconfidence interval and credible probabilities?
- Q What is the Wilcoxon rank test and when do you use it. What arethe advantages  and disadvantages of this test.?
- Q Write a report on the application of all the forecastingmethods.(regression,time series decomposition and exponentialsmoothing,ARIMA models
- Q How many types of hypotheses are there?
- Q The class is Psychology - 223 but it's more a Statisticsquestion...1.I need to describe the hypothesis associated with myresearch scenario.2. I need to state my understanding of what eachhypotheses mean.3....
- Q A consumer preference study compares the effects of threedifferent bottle designs (A, B, and C)on sales of a popular fabric softener. A completely randomizeddesign is employed. Specifically, 15 supermarkets of...
- Q Let X1 and X2 be uniform on the consecutive integers -n, -(n+1),... , n-1, n. Use convolution to find the mass function for X1 +X2.
- Q Suppose a random sample of size 56 is selected from a populationwith  = 8. Find the value of the standard error of themean in each of the following cases (use the...
- Q what is General Social Survey (GSS), and why is it such animportant source of data for understanding American society? Writea brief paragraph that describes the GSS.
- Q study of career plans of young women and men sentquestionnaries to all 722 membwrs of the senior class in thecollege and business adminstration at the university of illnois.one questin asked...
- Q You are to calculate the mean and standard deviation for therate of returns for IBM and GE. Use monthly values for the periodAugust 1, 2007 through August 1, 2018Q10.You are...
- Q I'm trying to figure out how did they come up with theanswer for the Test Value, and P Vaule. With this in formationprovided. is there a formula to figuring out...
- Q 9. Use the given information to find the number of degrees of​freedom, the critical values X2/L​, and X2/R and the confidenceinterval estimate of σ. It is reasonable to assume that...
- Q 1. Using the Data Set, create andcalculate the following in Excel®:Determine the range of values in which you would expect to findthe average weekly sales for the entire sales force...
- Q Music GroupControl Group302830233225232628302420262929203028262620272021242926233327212031262226262825273027SPSS.1 A study reveals that older adults workout a little harder when they listen to music. The table belowcontains the data from two groups of older adults: one...
- Q Homework Question #1:The Following Table shows total annual sales for 10 high-endsupermarket stores and the median age of residents of each townwhere these stores are located. Supermarket executives believe thattheir...
- Q According to Masterfoods, the company that manufacturesM&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12%are red, 23% are blue, 23% are orange and 15% are green. (Roundyour answers...
- Q Suppose a market analyst wants to determine whether theaverage price of a gallon of whole milk in Seattle is greater thanAtlanta. To do so, he takes a telephone survey of21...
- Q In the game of​ roulette, a player can place a ​$9 bet on thenumber 6 and have a 1 /38 probability of winning. If the metal balllands on 6​, the...
- Q Do students reduce study time in classes where they achieve ahigher midterm score? In a Journal of Economic Education article(Winter 2005), Gregory Krohn and Catherine O’Connor studied studenteffort and performance...
- Q I need this in R code please: Use the dataset ’juul’ in package’ISwR’ to answer the question. (1) Conduct one-way ANOVA test totest if the mean of igf1 of each...
- Q Develop a revenue management (maximizing) model based on theinformation given in the scenario.How many seats should be allocated toeach of the 16 itineraries to maximizerevenue?What is the (maximum) expected revenue...
- Q Problem 1: Oil Production Data: The Data in the following arethe annual world crude oil production in millions of barrels forthe period 1880-1988. The data are taken from Moore and...
- Q Describe how you would collect a sample that gave each person inthe population an equal chance of being sampled.
- Q What sample size would you need to make the 99% confidenceinterval have the same margin of error as the 90% confidenceinterval?
- Q Let X be the exam grade of a student taking Calculus 1 withProfessor Smith. The professor believes that X has a mean of81 and a standard deviation of22. Suppose there...
- Q An engineer measured the Brinell hardness of 25 pieces ofductile iron from her company, that were subcritically annealed.She believes that the alloys her company uses in iron, willultimately make the...
- Q Suppose there was no correlation between the Test Screenand the medical assessment of disease (i.e. the test was not ableto differentiate between those with or without the disease). Basedon the...
- Q One​ season, the average little league baseball gameaveraged2hours and3minutes​(151​minutes) to complete. Assume the length of games follows thenormal distribution with a standard deviation of10 minutesComplete parts a through d below.Bold...
- Q Analysis of variance (ANOVA)An investigator compares the difference in the amount of 20%sucrose solution removed by pollinators between unadulteratedsolution and solutions with 50, 100, 150, and 200 parts per millionof...
- Q Approximate ?(68.5 < ?Ì… < 71.5) when ?Ì… is the mean of arandom sample of size 12 from a distribution with ? = 70 andvariance of 75.
- Q 1.  An investigator wishes to compare the average timeto relief of headache pain under threedistinct medications, call them Drugs A, B, and C. Fifteenpatients who suffer from chronicheadaches are randomly selected...
- Q Today, the waves are crashing onto the beach every 5.8 seconds.The times from when a person arrives at the shoreline until acrashing wave is observed follows a Uniform distribution from...
- Q A private college report contains these​ statistics:75​% of incoming freshmen attended public schools.65​% of public school students who enroll as freshmen eventuallygraduate.80​% of other freshmen eventually graduate.What percent of students...
- Q For the following data​ (a) display the data in a scatter​ plot,(b) calculate the correlation coefficient​ r, and​ (c) make aconclusion about the type of correlation. The ages​ (in years)...
- Q You don't need to be rich to buy a few shares in a mutual fund.The question is, how reliable are mutual funds asinvestments? This depends on the type of fund...
- Q The director of the Wisconsin Department of Business Licensingis looking for ways to improve employee productivity. Specifically,she would like to see an improvement in the percentage ofapplications that employees process...
- Q The time needed to complete a final examination in a particularcollege course is normally distributed with a mean of 100 minutesand a standard deviation of 20 minutes. Answer the followingquestions.(a)...
- Q The semester average grade for a statistics course is 76 with astandard deviation of 5.5. Assume that stats grades have abell-shaped distribution and use the empirical rule to answer thefollowing...
- Q In San Francisco, 15% of workers take public transportationdaily.A) In a sample of 20 San Fransisco workers what is theprobability that between 9 and 10 workers take publictransportation daily?B) In...
- Q A particular type of ballpoint pen uses minute ball bearingsthat are targeted tohave a diameter of 0.5 mm. The lower and upper speci cation limitsunder which theball bearing can operate...
- Q Inthe cutting machine problem, for μμ=1000 mm and σσ= 12 mm, suppose we establish ¯xx¯= 997 mm to ¯xx¯= 1003 mm as our cutoffs for accepting μμ= 1000 mm, calculate...
- Q Data collected by an arcade store manager yielded the followingconfidence interval for the proportion of customers who played thenew video game the store just bought: (21% to 30%). Give the...
- Q side note: these are checkboxes so multiple answers can bechosenIn what everyday applications might some of the geometricproblems discussed above (such as finding the volume of a frustumof a pyramid)...
- Q 1 point) According to data from the Tobacco Institute TestingLaboratory, a certain brand of cigarette contains an average of 1.4milligrams of nicotine. An advocacy group questions this figure,and commissions an...
- Q he motion picture industry is a competitive business. More than50 studios produce several hundred new motion pictures each year,and the financial success of the motion pictures variesconsiderably. The opening weekend...
- Q A. A stress analysis was conducted on random samples ofepoxy-bonded joints from two species of wood. A random sample of120 joints from species A had a mean shear stress of...
- Q A clinic developed a diet to impact body mass (fat and muscle).A nutritionist in the clinic hypothesizes that heavier individualson the diet will predict more body fat. Below are the...
- Q Bernard Haldane Associates conducted a survey in March 2004 of1021 workers who held white-collar jobs but who had changed jobs inthe previous twelve months. Of these workers, 56% of the...
- Q Suppose there are 54% female students on CMU campus. A randomsample of 100 students was obtained. What is the probability therewill be equal to or more than 58 female students?
- Q Suppose a long jumper claims that her jump distance is less than16 feet, on average. Several of her teammates do not believe her,so the long jumper decides to do a...
- Q Simulate a distribution of 500 t-scores with 24 degrees offreedom into a variable called tsim using the rt() function. Solveusing R.
- Q Pre-Employment Drug Screening Results are shown in the followingTable:Positive Test ResultNegative Test ResultSubject Uses Drugs8(True Positive)2(False Negative)Subject is not a Drug User10(False Positive)180(True Negative)If 1 of the 200 test subjects...
- Q The presence of student-owned information and communicationtechnologies (smartphones, laptops, tablets, etc.) in today'scollege classroom creates learning problems when students distractthemselves during lectures by texting and using social media.Research on multitasking...
- Q The U.S. Energy Information Administration (US EIA) reportedthat the average price for a gallon of regular gasoline is $3.95 .The US EIA updates its estimates of average gas prices on...
- Q I can't figure out how to create the decision tree with thesending a messaged situation!The crew of Endurance can visit two planets (Mann’s andEdmunds’). They can choose to visit neither...
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