Basic Math question and answers for September 18, 2023
- Q Hurricanes The data below represent the maximumwind speed (in knots) and atmospheric pressure (in millibars) for arandom sample of hurricanes that originated in the AtlanticOcean.Atmospheric Pressure (mb)Wind Speed (knots)99350995609946099745100345100440100055994559421051006301006409421201002409865098370994659401209768096610098255Source:National Hurricane...
- Q The following data show the lengths of boats moored in a marina.The data are ordered from smallest to largest. 16; 17; 19; 20; 20;21; 22; 23; 24; 24; 24; 25;...
- Q (A) A gum ball dispenser contains a large number of gum balls inthree different colors, red, green, and yellow. Assuming that thegum balls are dispensed one at a time, describe...
- Q Your local grocery store claims that on average their freshcaught salmon will weigh 2 pounds. You want to test to see if theirclaim is correct so you gather a simple...
- Q Determine the factorization method and MLE of gammadistribution
- Q Considerapopulationwhoseprobabilitiesaregivenbyp(1)=p(2)=p(3)= 1 3(a) DetermineE[X]. (b) DetermineSD(X).?2? n =?nSD(X)=In the preceding formula, ? is the population standarddeviation, and n is the(c) Let X denote the sample mean of a sample of...
- Q Descriptive statistics: What do all of those numbers mean interms of the problem. Organizing and summarizing data is calleddescriptive statistics. Two ways to summarize data are by graphingand by using...
- Q OutcomeOutcome Met/Not Met/In ProcessEvidenceI1.Statistically significant difference between treatment andcomparison groups in mathematics grades 3–8T=3.626 P<3.0533536280097256E-42.Statistically significant difference between treatment andcomparison groups in science grades 4 & 8T=1.77P<0.078574882938539843a.Statistically significant difference between...
- Q A recent Pew Center Research survey revealed that 68% of highschool students have used tobacco related products. Suppose astatistician randomly selected 20 high school students. Use thisinformation to answer questions...
- Q The DataThe real estate markets, around the United States, havebeen drastically changing since the housing crisis of 2008. Manyexperts agree that there has never been a time where the market...
- Q If X is a normal random variable with parameters ?2 = 36 and ? =10, compute (a) P{X ? 5} .(b) P{X = 5}.(c) P{10>X?5}.(d) P{X < 5}.(e) Find the...
- Q The ages of a group of 135 randomly selected adult females havea standard deviation of 17.9 years. Assume that the ages of femalestatistics students have less variation than ages of...
- Q What other examples can you think of where most people have moreor less than the average? This is true of most things with anon-symmetric distribution (e.g., weight, math scores, marathontimes)...
- Q Many studies have suggested that there is a link betweenexercise and healthy bones. Exercise stresses the bones and thiscauses them to get stronger. One study examined the effect ofjumping on...
- Q What criteria would you look at when conducting a statisticalanalysis to determine which online dating site(s) someone shoulduse, and why? If you would not consider online dating for yourself,ask a...
- Q Clinical depression is a serious disorder thataffects millions of people. Depression often leads to alcohol as ameans of easing the pain. A Gallup survey attempted to study therelationship between depression...
- Q The percent of persons (ages five and older) in each state whospeak a language at home other than English is approximatelyexponentially distributed with a mean of 8.76.The lambda of this...
- Q Use the given degree of confidence and sample data to find aconfidence interval for the population standard deviation ?. Assumethat the population has a normal distribution. Weights of men: 90%confidence;...
- Q Describe a scenario where a researcher could use a Goodness ofFit Test to answer a research question. Fully describe the scenarioand the variables involved and explain the rationale for youranswer....
- Q Assuming the population is normally distributed, construct a 95%confidence interval for the population mean, based on the followingsample of size n = 7:1 2 3 4 5 6 7The mean...
- Q Year/Number of Years Since 1971/Number of stores1971 01198716171988173319891855199019841991201161992211651993222721994234251995246771996251015199726141219982718861999282498200029350120013047092002315886200332722520043385692005341024120063512440200736150112008371668020093816635201039168582011401700320124118066201342197672014432136620154422519Identify the initial value and the growth rate of yourexponential model and explain what they mean in the context ofStarbucks Stores. Put your...
- Q obs gpa iq gender concept1 7.94 121 2 692 8.292 120...
- Q A political committee consists of eight Democrats and fiveRepublicans. A subcommittee of nine people needs to be formed fromthis group.? (For this? problem, define a success as a Democratbeing selected...
- Q The table below givesthe age and bone density for five randomly selected women. Usingthis data, consider the equation of the regression line,yˆ=b0+b1xy^=b0+b1x, for predicting a woman's bone density based onher...
- Q Construct the confidence interval for the population mean ?. c=0.90?, x=9.8?, ? =0.4?, and n =46A 90?% confidence interval for ? is ?
- Q Discuss the topic most challenging in Inference Regression?Provide a good description of the mentionedtopicDiscuss the reasons for the challengesDiscuss exactly what the challenges are
- Q Let X and Y have the following joint distribution:X/Y01205/508/501/50210/501/505/50410/5010/500Further, suppose ?x = ?(1664/625), ?y = ?(3111/2500)a) Find Cov(X,Y)b) Find p(X,Y)c) Find Cov(1-X, 10+Y)d) p(1-X, 10+Y), Hint: use c and find...
- Q The following contingency table shows the number of people whotook a statistics course classified by type of student and joboutcome Type of studentJoboutcome Undergraduate (B1) Graduate (B2)Got a job aftergraduation(A1) 150 100Did not get a...
- Q 3300 Econometics HW Set 1DATECons.Disp.Icome2015-01-01$11,788.36$13,226.572015-04-01$11,887.54$13,327.812015-07-01$11,971.95$13,440.362015-10-01$12,039.65$13,471.392016-01-01$12,111.78$13,562.272016-04-01$12,214.10$13,541.452016-07-01$12,294.30$13,592.922016-10-01$12,372.73$13,685.362017-01-01$12,427.65$13,835.342017-04-01$12,515.86$13,909.772017-07-01$12,584.91$13,986.192017-10-01$12,706.37$14,065.922018-01-01$12,722.84$14,219.832018-04-01$12,842.02$14,306.612018-07-01$12,968.54$14,393.59The data given in the data file in theConsumption file represent the real private consumption of the USAfrom Quarter I 2005 to III Quarter 2018.Similarly, the...
- Q Sample mean: x? = 48.74Sample standard deviation: s = 32.5857Size of your sample: n = 50What is your Point Estimate? (round each answer to at least 4decimals)For a 95% confidence...
- Q please provide me belowjust i wantz tables , t tables , chi square tablesboth right tailed ,left tailed .,two tailedhigh quality of images only,other wise it wont help me, it...
- Q Allen's hummingbird (Selasphorus sasin) has been studied byzoologist Bill Alther.† Suppose a small group of 14 Allen'shummingbirds has been under study in Arizona. The average weightfor these birds is x...
- Q In a survey, 38% of the respondents stated that they talk totheir pets on the telephone. A veterinarian believed this result tobe too high, so he randomly selected 150 pet...
- Q A phone manufacturer wants to compete in the touch screen phonemarket. Management understands that the leading product has a lessthan desirable battery life. They aim to compete with a new...
- Q In one case that made it all the way to the Supreme Court, adefense lawyer in Michigan challenged the process of selecting thejury pool in the trial of his accused...
- Q Grand Strand Family Medical Center is specifically set up totreat minor medical emergencies for visitors to the Myrtle Beacharea. There are two facilities, one in the Little River Area andthe...
- Q We need to find the confidence interval for the SLEEP variable.To do this, we need to find the mean and standard deviation withthe Week 1 spreadsheet. Then we can the...
- Q 1.Let x be a random variable that represents thepercentage of successful free throws a professional basketballplayer makes in a season. Let y be a random variable thatrepresents the percentage of...
- Q Park Rangers in a Yellowstone National Park have determined thatfawns less than 6 months old have a body weight that isapproximately normally distributed with a mean µ = 26.1 kg...
- Q 1. How long does it take an ambulance to respond to a requestfor emergency medical aid? One of the goals of one study was toestimate the response time of ambulances...
- Q Ted Olson, director of the company Overnight Delivery,is worried because of the number of letters of first class that hiscompany has lost. These letters are transported in airplanes andtrucks, due...
- Q Data from the Bureau of Labor Statistics’ Consumer ExpenditureSurvey (CE) show that annual expenditures for cellular phoneservices per consumer unit increased from $237 in 2001 to $634 in2007. Let the...
- Q The wedding date for a couple is quickly approaching, and thewedding planner must provide the caterer an estimate of how manypeople will attend the reception so that the appropriate quantityof...
- Q Consider the following results for two samples randomly takenfrom two populations.Sample A Sample BSample Size 31 35Sample Mean 106 102Sample Standard Deviation 8 7Test the hypothesis Ho=sigma1-sigma2=0 vs Ha=sigma1-sigma2 donot...
- Q The following data on price ($) and the overall score for 6stereo headphones that were tested by Consumer Reports were asfollows.BrandPriceScoreBose18078Scullcandy16077Koss8563Phillips/O'Neill7057Denon8040JVC3527a. Does the t test indicate a significantrelationship between price...
- Q Suppose x has a distribution with ? = 30 and ? = 28. (a) If arandom sample of size n = 49 is drawn, find ?x, ? x and P(30...
- Q Allen's hummingbird (Selasphorus sasin) has been studied byzoologist Bill Alther.† Suppose a small group of 13 Allen'shummingbirds has been under study in Arizona. The average weightfor these birds is x...
- Q A number of minor automobile accidents occur at varioushigh-risk intersections in York county despite the traffic lights.The traffic department claims that a modification in the type oflight will reduce these...
- Q Give 3 examples of random process of probability statisticalprocess
- Q Construct a truth table for the statement [q?(~r?p)]?~p.Complete the truth table below by filling in the blanks. (T orF)pqr~r~r?pq?(~r?p)~p[q?(~r?p)]?~pTTTTTFTFTTFF
- Q Mini-Case Study 3: Debt SpendingA study found that American consumers are making average monthlydebt payments of $983 (Experian.com- November 11th, 2010). However,the study of 26 metropolitan areas reveals quite a...
- Q According to the National Automobile Dealers Assoc., 75% of U.S.car dealers' profits comes fromrepairs andparts sold. However, many of the dealerships' service departmentsaren't open eveningsorweekends. The percentage of dealerships opened...
- Q Please show your calculations and steps. In arecent national survey, 30 Canadian adults aged 18-24 reportedhaving used cannabis for the first time since its legalisation in2018 compared to 68 among...
- Q 1. When a pair of balanced dice is rolled. Let A = {the sum ofthe dice is 10}, B = {doubles are rolled}. Find P(A), P(B).2. Four couples are randomly...
- Q In 2008 the Better Business Bureau settled 75% of complaintsthey received (USA Today, March 2, 2009). Suppose you have beenhired by the Better Business Bureau to investigate the complaintsthey received...
- Q Compute in excelText Question 8.3.8 (Confidence Interval for a Mean, not aproportion) (adapted) The Table below contains the percentage ofwomen receiving prenatal care in 2009 for a sample of countries.(i)...
- Q Compute the confidence interval for the difference of twopopulation means. Show your work.Sample Mean 1= 17Population standard deviation 1= 15n1= 144Sample Mean 2= 26Population Standard Deviation 2= 13n2 = 121Confidence...
- Q Find the? t-value such that the area in the right tail is 0.025with 9 degrees of freedom. nothing ?(Round to three decimal placesas? needed.) ?(b) Find the? t-value such that...
- Q The eigenvalue is a measure of how much of the variance of theobserved variables a factor explains. Any factor with an eigenvalue?1 explains more variance than a single observed variable,...
- Q Consider the following results for two independent randomsamples taken from two populations.Sample 1:n1 = 40x?1 = 13.9?1 = 2.3Sample 2:n2 = 30x?2 = 11.1?2 = 3.4What is the point estimate...
- Q The weight of trout in a fish farm follows the distributionN(200,502). A trout is randomly selected. (a) What is theprobability that its weight does not exceed 175g? (b) What is...
- Q Describe the sampling distribution of ModifyingAbove p withcaret. Assume the size of the population is 15 comma 000.nequals200?, pequals0.4 Choose the phrase that best describes theshape of the sampling distribution...
- Q The probability that a random gift box in Overwatch (PC game)has one of the character skins you want is .1. Suppose you get agift box every game you play, and...
- Q GRADED PROBLEM SET #5Answer each of the following questions completely. There are atotal of 20 points possible in the assignment.(8 pts) Based on past results found in the InformationPlease Almanac...
- Q . The state's education secretary claims that the average costof one year's tuition for all private high schools in the state is$2350.00.A sample of 35 private high schools is selected,...
- Q Consider the following sample data for the relationship betweenadvertising budget and sales for Product A: Observation 1 2 3 4 5 67 8 9 10 Advertising ($) 40,000 50,000 50,000...
- Q As part of Office Depot’s cost reducing strategy, research isbeing conducted on its line of printers. Currently Office Depotoffers 5 types of printers, each having different features. OfficeDepot detected that...
- Q The Bogard Corporation produces three types of bookcases, whichit sells to large office supply companies. The production of eachbookcase requires two machine operations, trimming and shaping,followed by assembly, which includes...
- Q A transect is an archaeological study area that is 1/5mile wide and 1 mile long. A site in a transect is thelocation of a significant archaeological find. Let xrepresent the...
- Q AbstractThis study investigated associations between working memory(measured by complex memory tasks) and both reading and mathematicsabilities, as well as the possible mediating factors of fluidintelligence, verbal abilities, short-term memory (STM),...
- Q Are phone calls equally likely to occur any day of the week? Theday of the week for each of 392 randomly selected phone calls wasobserved. The results are displayed in...
- Q 1. Box #1 contains 4 red chips and 1 white chip. Box #2 contains3 red, 1 black and 6 white chips. The experiment consists ofrandomly picking a box, then randomly...
- Q Use technology to find the? P-value for the hypothesis testdescribed below.The claim is that for a smartphone? carrier's data speeds at?airports, the mean ismu?equals=16.0016.00Mbps. The sample size isnequals=1313and the test...
- Q Think how statistics and data analysis may be beneficial to youwithin your profession, job, or home?
- Q 1. Discuss probabilitycalculations as it would pertain to coin tosses. cards being drawnfrom a deck of cards (52 cards) and roulette (Am / EU). Considerscenarios and how you would calculate...
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