Statistics question and answers for July 05, 2023
- Q 1. T distribution with n degree of freedom is T=z/squart root(x/n) does that mean n-1 degree of freedom will beT=z/squart root (x/n-1) ?2. what is the degrees of freedom. ?????...
- Q The mathematics department is considering revising howstatistics is taught. In order to see if their changes will beeffective in increasing student performance, they decided to run aSimulated Experiment. Previous semesters...
- Q Waiters at a restaurant chain earn an average of $249 per shift(regular pay + tips) with a standard deviation of $39. For randomsamples of 36 shifts at the restaurant, within...
- Q can you show steps using the TI-84 plus? not using excelfunction.19. Mercury in Sushi An FDA guideline is that the mercury infish should be below I part per million (ppm)....
- Q -A random sample of 15 checking accounts at a bank showed anaverage balance of $280. The standard deviation of the sample was$60. Construct a 90% confidence interval for the mean...
- Q The weights of the fish in a certain lake are normallydistributed with a mean of 15.9 pounds and a standard deviation of5.1 pounds. If 5 fish are randomly selected, find...
- Q In 2003, the Accreditation Council for Graduate MedicalEducation (ACGME) implemented new rules limiting work hours for allresidents. A key component of these rules is that residents shouldwork no more than...
- Q Question 7 (1 point)Poker game: You pay $5 to play. A 7-card poker hand is dealt,and you are paid $89 if the hand contains a 3 of a kind [at...
- Q 3. Take the mean and standard deviation of dataset A calculated in problem 1 and assume that they are populationparameters (μ and σ) known for the variable fish length in...
- Q In a sample of 331 Americans, 15% decided to not go to collegedo so because they cannot afford it.(a) Suppose we wanted the margin of error for the 90% confidencelevel...
- Q Go into R and view all of the data sets preloaded in R by usingthe data() command. As you see there are quite a few data setsloaded into R. Now...
- Q A sports team compared two versions of a basketball (denoted asJ and K) with respect to the time it takes to reach the hoop whenthrown. They randomly selected 100 basketball...
- Q Jim Mead is a veterinarian who visits a Vermont farm to examineprize bulls. In order to examine a bull, Jim first gives the animala tranquilizer shot. The effect of the...
- Q A recent study on state income tax payments found that theaverage person paid $7,500 each year with a standard deviation of$250.20. After multiple propositions by local experts, a change wasimplemented...
- Q If you have a two tailed test with 10df, yourrejection value will be _____________.Group of answer choices+2.228 and -2.228+1.182 and -1.182only +2.228only +1.182Flag this QuestionQuestion 22 ptsIf you have a...
- Q To study the effect of temperature on yield in a chemicalprocess, five batches were produced at each of three temperaturelevels. The results follow. Temperature 50°C 60°C 70°C 30 29 28...
- Q Suppose that we have a red coin and a blue coin. The red coinhas probability pR = 0.1 of landing heads, and the blue coin hasprobability pB = 0.2 of...
- Q The Capital Asset Price Model (CAPM) is a financial model thatattempts to predict the rate of return on a financial instrument,such as a common stock, in such a way that...
- Q What is St. Petersburg paradox, you have to show what it is,what kind of problem it comes with, how this problem can be solved,and how the utility could solve this...
- Q Background: Anorexia is well known to bedifficult to treat. The data set provided below contains data onthe weight gain for three groups of young female anorexia patients.These groups include a...
- Q Your foreman claims that tree planting is a job for youngpeople. He further claims that 3/4 of tree planters are below theage of 21. You think he's exaggerating and the...
- Q A machine can be adjusted so that, when it is under control, themean amount of sugar dispensed is 5 lbs. It is known that thepopulation standard deviation is .15 lbs....
- 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 Consider the data set: 26, 29, 24, 17, 27, 20, 23, 21, 26,27.(a) Find the median and the upper and lower quartiles for thisdata set.(b) Setup then evaluate the numerical...
- Q 5- A hospital buys blood pressure monitors in lots of 1000. Onaverage, 2 out 1000 is defective. If 10 are selected from one lota. What is the probability that none...
- Q Thirty randomly selected students took the calculus final. Ifthe sample mean was 75 and the standard deviation was 7.2​,construct a​ 99% confidence interval for the mean score of allstudents.
- Q You want to know if right-handed individuals have a lower gradepoint average than left handed individuals.Question 1 options:Multiple Regressionchi squaredt-testcorrelationANOVA (F test)Question 2 (1 point)SavedYou want to see if a...
- Q Discussion Board Forum 1/Project 2InstructionsStandard Deviation and OutliersThread:For this assignment, you will use the Project 2 ExcelSpreadsheet to answer the questions below. In each question, usethe spreadsheet to create the...
- Q You roll two fair four-sided dies and then flip a fair coin. Thenumber of flips is the total of the roll.a. Find the expected value of the number of heads...
- Q 1) Consider the discrete probability distribution to the rightwhen answering the following question. Find the probability that xexceeds 4.A) 0.97b) 0.39c) 0.58D) 0.612)The on-line access computer service industry is growing...
- Q Every morning the foreman flips a coin to decide which group ofplanters get first choice of the day's planting sites. You thinkthe foreman doesn't like your group (we won't go...
- Q 1. The mean age of College students is 25. A certain class of 33students has a mean age of 22.64 years. Assuming a populationstandard deviation of 2.87 years, at the...
- Q The area under the curve must add up to one fora.all density functions.b.just one density function.c.no density function.d.a special group of density functions.3 points   QUESTION 2If the mean of a...
- Q Could you explain this to me? I'm really confused. I need tolearn it step by step. Thank you so much! So this is the samplesetthe s ample mean is 100...
- Q Use the following information to answer questions 15 to19.The following indicates the number of hours that Johnny spentstudying the week before each exam in his classes along with thecorresponding exam...
- Q Choose a variable that will allow the use of dependent samples.For example, you might wish to see if a persons’ proficiency atsoftball has changed/improved after a training camp. Do not...
- Q Total plasma volume is important in determining the requiredplasma component in blood replacement therapy for a personundergoing surgery. Plasma volume is influenced by the overallhealth and physical activity of an...
- Q How hot is the air in the top (crown) of a hot air balloon?Information from Ballooning: The Complete Guide to Riding theWinds, by Wirth and Young (Random House), claims that...
- Q Major League Baseball now records information about every pitchthrown in every game of every season. Statistician Jim Albertcompiled data about every pitch thrown by 20 starting pitchersduring the 2009 MLB...
- Q In a study of children with a particular disorder, parents wereasked to rate their child on a variety of items related to how welltheir child performs different tasks. One item...
- Q A study was conducted on students from a particular high schoolover the last 8 years. The following information was foundregarding standardized tests used for college admitance. Scores onthe SAT test...
- Q The following data represent the monthly phone​ use, in​minutes, of a customer enrolled in a fraud prevention program forthe past 20 months. The phone company decides to use the upperfence...
- Q Meaghan wants to study her friends’ drinking habits. Meaghanknows that people drink, on average, 0.6 alcoholic beverages perday, with standard deviation 0.5. Meaghan investigates how manyalcoholic drinks her 49 friends...
- Q On Arvala-7, Jawas are notorious for stealing parts fromunattended vehicles. The number of part thefts over a one-monthperiod in 40 randomly selected regional zones have a mean of 5.5thefts and...
- Q The proportion of the standard normal curve that falls betweenthe mean and a Z-score of 2.15 is .4842.true or false
- Q Let Y = X1 + X2 + 2X3 represent the perimeter of an isoscelestrapezoid, where X1 is normally distributed with a mean of 113 cmand a standard deviation of 5...
- Q According to a Gallup poll, 11.55% of American adults havediabetes. A researcher wonders if the rate in her area is higherthan the national rate. She surveys 150 adults in her...
- Q describe the process of hypothesis test regarding the differencebetween two population proportions
- Q Constructing Confidence Intervals In Exercises 45 and 46, usethe information to construct 90% and 99% confidence intervals forthe population mean. Interpret the results and compare the widthsof the confidence intervals.45....
- Q Question 1The Goodness of Fit test and the Test of Independence are twoforms of which of the following test? (2 points)Regression analysisCorrelation analysisChi-square analysisIndependent samples t-testRelated samples t-testWe can make...
- Q For each of the following examples, state whether the chi-squaregoodness-of-fit test or the chi-square test for independence isappropriate, and state the degrees of freedom (df) for thetest.Part A) An instructor...
- Q 6. A local brewery produces three premium lagers named HalfPint, XXX, and Dark Night. Of its premium lagers, they bottle 40%Half Pint, 40% XXX, and 20% Dark Night lagers. In...
- Q Two players play each other in a pool tournament of \"Solids andStripes\". The first player to win two games wins the tournament. Inthe game of \"Solids and Stripes\", it is...
- Q An observational study was conducted to find out if eatingwhole-wheat products was associated with a reduction in body massindex (BMI) for children. The measure of interest was thedifference between population...
- Q DATAfile: HongKongMealsYou may need to use the appropriate appendix table or technologyto answer this question.The mean cost of a meal for two in a midrange restaurant in CityA is $44....
- Q 119.7114.7119.5118115.3113118.1122.6117.2122211.8211.5213.824212.1213.4216.6315.3317.2322.4321.2322.1322.7324.5319.5321.5414.7414413.7414.6414.4417.2417.2417.4414.61) What was the margin of error for the confidence interval forgasoline mileage of make 2?2) What was the lower 95% confidence limit for make 2mileage?3) What was the upper...
- Q For this problem, carry at least four digits after the decimalin your calculations. Answers may vary slightly due torounding.In a survey of 1000 large corporations, 252 said that, given achoice...
- Q A group of engineers developed a new design for a steel cable.They need to estimate the amount of weight the cable can hold. Theweight limit will be reported on cable...
- Q In 1912 the luxury liner Titanic on its first voyage across theAtlantic, struck an iceberg and sank. Some passengers got off theship in lifeboats, but many died. Think of the...
- Q 1) In MANCOVA, Independent variables, Dependent variables andcovariate must each confirm to a specific level of measurement.List the correct level of measurement for each of the variablelisted Independent variables, Dependent...
- Q In two consecutive years, 1000 adults in the magical communitywere asked if they believed that Voldemort had returned. The firstyear, 43% believed that he had returned and in the second...
- Q A large tank of fish from a hatchery is being delivered to alake. The hatchery claims that the mean length of fish in the tankis 15 inches, and the standard...
- Q A travel website would like to estimate the difference betweenthe average rental price of a car with automatic transmissionversus the average rental price of a car with manual transmissionat a...
- Q a) On the throw of a fair die, the expected value of the numbershowing is 3.5 and the standard deviation is 1.71. What is theexpected value and standard deviation of...
- Q 6.200 Autism and Maternal Antidepressant Use A recent study53compared 298 children with Autism Spectrum Disorder to 1507randomly selected control children without the disorder. Of thechildren with autism, 20 of the...
- Q Can you explain step by step for me? \"Dumb it down\"? I need alot of help with this question. Thank you so much!This is the sample set. The s ample...
- Q Seneca and Artie are lab partners in science class. Today theyhave to weigh liquid. They have a try of 80 weights that they canuse. There are four different kinds of...
- Q Use the accompanying data set to complete the followingactions.a. Find the quartiles.b. Find the interquartile range.c. Identify any outliers.61 64 63 58 59 58 64 63 60 55 64 59...
- Q 2. [EXCEL] Karl Duncker’s results on his ‘Candle Problem’ werepublished posthumously in 1945. Participants were asked to mount acandle on a wall in an upright position so that it would...
- Q You may need to use the appropriate appendix table or technologyto answer this question.A simple random sample withn = 59provided a sample mean of 26.5 and a sample standard deviationof...
- Q A survey of several 10 to 12 year olds recorded the followingamounts spent on a trip to the mall:$14.73,$18.13,$11.20,$14.89,$18.78,$21.08,$17.26 Construct the 99%confidence interval for the average amount spent by 10...
- Q A class survey in a large class for first-year college studentsasked, \"About how many hours do you study in a typical week?\". Themean response of the 427 students was x¯¯¯...
- Q typical student has a normal distribution with mean of 10minutes and standard deviation of 2 minutes to complete a question.The total exam has 80 minutes.how many questions should the exam...
- Q The birth weight of babies is approximately LOGNORMALLYdistributed, with a mean of 3732 grams and a standard deviation of472 grams.(a) What is the probability that a baby’s weight exceeds5000g?(b) What...
- Q A sample of 22 observations is selected from a normal populationfor which the population standard deviation is known to be 8. Thesample mean is 27.a. Determine the standard error of...
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
- Unlimited Question Access with detailed Answers
- Zin AI - 3 Million Words
- 10 Dall-E 3 Images
- 20 Plot Generations
- Conversation with Dialogue Memory
- No Ads, Ever!
- Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!