Basic Math question and answers for October 06, 2023
- Q Hi there, I have put up the full sheet but it is question twothat I need answered the most. Thank you for your time.Question 1.Drunk driving is one of the...
- Q I am having trouble with all three parts.A shelf contains 3 novels, 2 books of poetry, and 1 dictionary.We select 2 books at random in turn without replacement. Defineevents A...
- Q Dole Pineapple Inc. is concerned that the 16-ounce can of slicedpineapple is being overfilled. Assume the population standarddeviation of the process is .04 ounce. The quality controldepartment took a random...
- Q Why are sampling distributions important to the study ofinferential statistics? In your answer, demonstrate yourunderstanding by providing an example of a samplingdistribution from an area such as business,sports, medicine, social...
- Q Let (X_1, ..., X_k) be a multinomial distribution withprobabilities p_1, ..., p_k in n independent trials. CalculateE(X_i), and COV(X_i, X_j) for 1 <= i, j <= k.
- Q In a recent Super Bowl, a TV network predicted that 39 % of theaudience would express an interest in seeing one of its forthcomingtelevision shows. The network ran commercials for...
- Q Toyota company prides themselves on customer service. they havebeen trying to determine exactly how long it takes, from start tofinish, to buy a car at their dealerships. they have determinedthat...
- Q PlotNutrients added# of species10362036303241345233633071208323942110416What effect do nutrient additions have on plant speciesdiversity? Long-term experiments at the Rothamstead ExperimentalStation in the U.K. sought to investigate the relationship, withsome interesting findings.The data...
- Q A supermarket is trying to decide whether to accept or reject ashipment of tomatoes. It is impossible to check all the tomatoesfor size, but they desire an average weight of...
- Q Recent incidents of food contamination have caused great concernamong consumers. An article reported that 39 of 80 randomlyselected Brand A brand chickens tested positively for eithercampylobacter or salmonella (or both),...
- Q Suppose ?1 and ?2 aretrue mean stopping distances at 50 mph for cars of a certain typeequipped with two different types of braking systems. The datafollows: m = 8,x =...
- Q Most people, when asked, will say that they do not likenegative ads. However, negative advertising does work and,therefore, it is used quite often. What type of campaign materialmost appeals to...
- Q A machine that is programmed to package 3.90 pounds of cereal isbeing tested for its accuracy. In a sample of 64 cereal boxes, thesample mean filling weight is calculated as...
- Q 5. The test statistic of z=2.31 isobtained when testing the claim that p>0.3.a. This is a (two-tailed,right-tailed, left-tailed) test.b.? P-value=_____?(Round to three decimal places as?needed.)Choose the correct conclusionbelow.A.Reject Ho. There...
- Q How does a file drawer analysis (see book for description of“file drawer”) make the findings of a meta-analysis morepersuasive?
- Q -PLEASE SHOW ALL WORK-For this problem, carry at least four digits after the decimalin your calculations. Answers may vary slightly due torounding.A random sample of medical files is used to...
- Q Let the following sample of 8 observations be drawn from anormal population with unknown mean and standard deviation: 21, 14,13, 24, 17, 22, 25, 12. [You may find it useful...
- Q The Pew Internet and American Life Project reports that youngpeople ages 12-17 send a mean of 60 text messages per day. A randomsample of 40 young people showed a sample...
- Q A) A study is conducted to assess the relationship between theuse of marijuana during pregnancy and adverse delivery outcomes,defined as major congenital malformations. The following variablesare used in the analysis.Delivery...
- Q Data Science, I will give thumb up, thank youWhat is one critical drawback to the MLR (multiplelinear regression model) model (or any MLR model) forpredicting shardnado hazard? What are some...
- Q What are some of the distinct purposes discriminantanalysis is used for in marketing research applications? How mightyou use DA as a follow-up method after a cluster analysis is run,specifically, if...
- Q Consider random variables X1, X2, and X3 with binomialdistribution, uniform, and normal probability density functions(PDF) respectively. Generate list of 50 random values, between 0and 50, for these variables and store...
- Q Stephen (Steph) Curry, an American NBA player on the GoldenState Warriors, led the 2018 NBA salaries with the largest payrollfor the NBA. A fan looks up the salaries for all...
- Q A magazine subscriber study asked, "In the past 12 months, whentraveling for business, what type of airline ticket did youpurchase most often?" A second question asked if the type ofairline...
- Q Here are quarterly data for the past two years, from these data,prepare a forecast for the upcoming year using decompostion.foreccast years 9 to 12. FORECAST ERROR?PeriodActualperiodActual130054162540676038857119145808760
- Q 1. As beach temperatures rise, more female turtles are born. Iwant to show that more than 50% of the current turtle hatchlingsare female, as this further threatens the turtle population....
- Q The manager of computer operation of a large company wants tostudy computer usage of two departments within the company-theaccounting dept. and the research dept. A random sample of fivejobs from...
- Q 9.3.3A study was conducted that measured the total brain volume (TBV)(in ) of patients that had schizophrenia and patients that areconsidered normal. Table #9.3.5 contains the TBV of thenormal patients and...
- Q In your own words, describe why it wouldn’t be best to runmultiple independent-sample t-tests when you have 3 or more groups.Come up with a sample experiment where you would use...
- Q The sampling distribution concept is an important component ofstatistical inference. This question aims to give you theopportunity to revisit this concept. No calculation or computingare needed! Explain briefly in your...
- Q A random sample of 100 observations from a population withstandard deviation 22.99 yielded a sample mean of 94.1. 1. Giventhat the null hypothesis is ??90 and the alternative hypothesis is?>90...
- Q Question 1:Dr. Snow replicated the previous studyand obtained scores for the three samples listed in thetable below:Low HSMedium HSHigh HS41417912126313826151415181619168171610514In SPSS, analyze the data Dr. Snow collected using a one-wayANOVA.Complete...
- Q Mrs. Warrack, a retired archeologist, enjoys hiking in BadgerCreed every other day. Usually she travels 3 miles per hike. Duringthe past year Mrs. Warrack has recorded the times of her...
- Q Consider the following results for independent samples takenfrom two populations.Sample 1Sample 2n1 = 500n2 = 200p1 = 0.44p2 = 0.31a. What is the point estimate of the differencebetween the two...
- Q Chemical signals of mice.Consider Refer to the Cell (May 14,2010) study of the ability of a mouse to recognize the odor of apotential predator, Exercise 3.63 (p. 143). Recall that...
- Q The authors of a paper studied a random sample of 351 Twitterusers. For each Twitter user in the sample, the tweets sent duringa particular time period were analyzed and the...
- Q Mr Ahuja have always been interested in whether or not where astudent sits is related to the students overall grades in school.Below is a table that divides students into 3...
- Q Let’s suppose that 75% of planets have a north and that of theplanets that have a north, 32% of them have two moons. On the otherhand, 72% of planets that...
- Q Q1. Does an average box of cereal contain 368 grams of cereal? Arandom sample of 36 boxes had a mean of 372.5 and a standarddeviation of 12 grams. Test at...
- Q 2. The Dean of Students at the University of Waterloo wanted toestimate the proportion of students who are willing to reportcheating by fellow students. So, her staff surveyed the 172students...
- Q A box contains three white balls, two black balls, and one redball. Three balls are drawn at random without replacement. Let Y1be the number of white balls drawn, and Y2...
- Q Questions 15 –17Personal incomes in a city have an average of $80,000and standard deviation of $20,000.15. The percent of personal incomes over $100,000 is(a) 0.05 (b) 0.1 (c) 0.1587 (d)...
- Q An article in the New England Journal of Medicine described arandomized experiment that investigated the effectiveness of twomedications for nausea in patients undergoing chemotherapytreatments for cancer. In the experiment, 157...
- Q How can one design a future sampling study to have alower bound? How could more information be used?
- 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 How many ways are there to select a committee of 17 politicianschosen from a room full of indistinguishable Democrats,indistinguishable Republicans, indistinguishable Independents ifevery party must have at least two members...
- Q A review session is given in order to find if the group whoattends it has a better average than who doesn't. The grades areorganized into two independent groups and the...
- Q A student records the repair cost for 13 randomlyselected TVs. A sample mean of $72.19 and standard deviation of$15.88 are subsequently computed. Determine the 98% confidenceinterval for the mean repair...
- Q In a recent study, among recently-graduated university studentsof the sample, only 4% of them wrote with their left hand. Yet,among grade 1 elementary-school students from the same sample, afull 20%...
- Q The Monty Hall problem is named for its similarity to the Let'sMake a Deal television game show hosted by Monty Hall. The problemis stated as follows. Assume that a room...
- Q In the early 1900s, Latter (1902) investigated the behavior offemale cuckoos, that lay their eggs on the ground and then movethem to the nests of other birds. In particular, Latter...
- Q Using R, conduct an ANOVA to see if there are differences inweight between two groups of monkeys. What is null hypothesisconclusion with evidence.Conduct a post-hoc MCP (use TukeyHSD) to see...
- Q Please Conduct a Paired Difference Test (use ?=5%) for the twodata sets below. Thanks.2012 2015 15.88 20.9915.54 21.0816.17 21.1515.80 21.2815.99 21.2916.28 21.3115.91 21.3515.77 21.3615.80 21.3615.95 21.3715.86 21.3816.07 21.3915.96 21.4016.20 21.4015.90 21.4115.90 21.4215.96 21.4216.29 21.4415.97 21.4815.95 21.4916.02 21.4916.08 21.5216.01 21.5316.18 21.5415.88 21.5816.14 21.5815.72 21.6415.93 21.6415.69 21.6716.24 21.6915.79 21.7115.69 21.7216.46 21.7215.87 21.7315.80 21.7615.94 21.7916.36 21.8115.90 21.8415.91 21.8415.91 21.8616.07 21.9216.52 21.9315.86 21.9716.07 21.9715.75 21.9916.07 22.0316.04 22.0616.15 22.1316.39 22.1715.87 22.1915.93 22.29
- Q Seventy percent of adults favor some kind of government controlon the prices of medicines. A random sample of 400 adults wasselected to determine whether or not they favor some kind...
- Q A random variable is normally distributed. It has a mean of 245and a standard deviation of 21. I just need G.a.)If you take a sample of size 10, can you...
- Q A food company has developed a high mineral sea salt (sodium). Anurse practitioner wants to know if blood pressure can be predictedfrom the sodium intake of the new sea salt....
- Q The mean per capita income is 15,654 dollars per annum with astandard deviation of 570dollars per annum.What is the probability that the sample mean would differ fromthe true mean by...
- Q There are 9 balls out of which one ball is heavy in weight andrest are of the same weight. In how many occurrences will you findthe heavy ball?
- Q Anderson et al. (1990) studied the effect of diet on the levelof low-density lipoprotein (LDL, the “bad” cholesterol) for a groupof men with hypercholesterolemia. Half the subjects were given adiet...
- Q A researcher is interested in determining if the attitude abouthomosexual marriages is dependent on region. In order to do theChi-Square association test, she ran analysis with Minitab and cameup with...
- Q A researcher wants to estimate the difference in the means oftwo populations. A random sample of 36 items from the firstpopulation results in a sample mean of 430. A random...
- Q Thedistribution of diastolic blood pressures for the population offemale diabetics between the ages of 30 and 34 has an unknown meanand standard deviation. A sample of 10 diabetic women is...
- Q Women are recommended to consume 1900 calories per day. Yoususpect that the average calorie intake is smaller for women atyour college. The data for the 15 women who participated in...
- Q B. The proportion of customers who are completely satisfied in arecent satisfaction survey of 300 customers at XYC Inc. is found tobe 0.26. Test the hypothesis that the populationproportion of...
- Q Use repetitions to solve it. Don't simplify answer(1) 20 different comic books will be distributed to five kids.How many ways are there to distribute the comic books if they aredivided...
- Q Of the following, which is a reason we take samples instead oftaking a census?Census is a hard word to say.A census is not reliable.A census doesn't give a good understanding...
- Q The average salary for American college graduates is $42,900.You suspect that the average is less for graduates from yourcollege. The 49 randomly selected graduates from your college hadan average salary...
- Q 3.3) A small market orders copies of a certain magazine for itsmagazine rack each week. Let X = demand for the magazine,with the following pmf.x123456p(x) 113 113313 413 213 213Suppose the store owner actually pays...
- Q Suppose that finishing times of runners in a local 10K racefollow an approximate normal distribution with mean 61 minutes andstandard deviation 9 minutes.(a) Melissa finished the race in 52 minutes....
- Q A sales region has been divided into five territories, each ofwhich was believed to have equal sales potential. The actual salesvolume for several sampled days is logged in DATA. At...
- Q A customer service phone line claims that the wait times beforea call is answered by a service representative is less than 3.3minutes. In a random sample of 62 calls, the...
- Q To find out whether a new serum will arrest leukemia, 10 mice,all with an advanced stage of the disease, are selected. Five micereceive the treatment and 5 do not. Survival...
- Q You may need to use the appropriate appendix table or technologyto answer this question.Older people often have a hard time finding work. A researchgroup reported on the number of weeks...
- Q A used car dealer says that the mean price of a three-year-oldsport utility vehicle in good condition is $18,000. A random sampleof 20 such vehicles has a mean price of...
- Q The budgeting process for a midwestern college resulted inexpense forecasts for the coming year (in $ millions) of $9, $10,$11, $12, and $13. Because the actual expenses are unknown, thefollowing...
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