Basic Math question and answers for July 22, 2023
- Q A farmer uses a greenhouse to grow his fruits and vegetablesyear round. He recently purchased a machine that uses artificialintelligence to adjust the lighting to optimize plant growth. Hewants to...
- Q An emergency service wishes to see whether a relationship existsbetween the outside temperature and the number of emergency callsit receives for a 7-hour period. The data are shown. EmergencyCalls and...
- Q Hi, I am doing up my homework on mathematics and here are somequestions. I want to cross-reference my answers thank you. Decideif the statements below are True or False. Please...
- Q A machine produces pipes used inairplanes. The average length of the pipe is 16 inches. Theacceptable variance for the length is 0.3 inches. A sample of17 pipes was taken. The...
- Q 1)Assume that the data has a normal distribution and the numberof observations is greater than fifty. Find the critical z valueused to test a null hypothesis. Round to two decimal...
- Q A. The data below represent a random sample of 9 scores on astatistics quiz. (The maximum possible score on the quiz is 10.)Assume that the scores are normally distributed with...
- Q #1 Assume that a new interpretation of thefrustration aggression hypothesis says that it is not all peoplewho become aggressive when frustrated, but only those who have beenbrought up in a...
- Q Most companies have increased their dependence on computers andsoftware. As a result, more employee time is spent on the telephonewith technical support for the software. A sample of 8 times...
- Q Seedlings of the parasitic plant Cuscuta pentagona (dodder) huntby directing growth preferentially toward nearby host plants. Toinvestigate the possibility that the parasite detects volatilechemicals produced by host plants, a researcher...
- Q A survey was conducted to determine, on average, how longpatients have to wait to see a doctor. The number of patients thatended up waiting up to 2 hours to see...
- Q Strassel Investors buys real estate, develops it, and resells itfor a profit. A new property is available, and Bud Strassel, thepresident and owner of Strassel Investors, believes if he purchasesand...
- Q A sample of 16001600 computer chips revealed that 21%21% of thechips fail in the first 10001000 hours of their use. The company'spromotional literature states that 23%23% of the chips fail...
- Q Use the magnitudes? (Richter scale) of the earthquakes listed inthe data set below. Find the mean and median of this data set. Isthe magnitude of an earthquake measuring 7.0 on...
- Q Answer the following questions showing all work. Fullcredit will not be given to answers without work shown. If you useMinitab Express or StatKey include the appropriate output (copy +paste). If...
- Q 3) [4] Below are the observed and expected (in parentheses)frequencies for athletic injuries for those athletes who properlystretched versus those who did not. Assuming a ? 2 Test forIndependence test...
- Q Assume that the GPA of a randomly chosen college student has anormal distribution with mean 2.84 and standard deviation 0.42.a. Find the probability that a randomly chosen college studenthas a...
- Q A recent study found that 61 children who watched a commercialfor potato chips featuring a celebrity endorser ate a mean of 38grams of potato chips as compared to a mean...
- Q A report states the average rent for office space in a urbanarea is $17.75 per square foot. A real estate agent claims thisaverage is incorrect. The agent selected a sample...
- Q Overproduction of uric acid in the body can be an indication ofcell breakdown. This may be an advance indication of illness suchas gout, leukemia, or lymphoma.† Over a period of...
- Q The city of Bloomington is about to build a new water treatmentplant. Once the plant is designed (D) we can select the site (S),the building contractor (C and the operating...
- Q John knowsthat monthly demand for his product follows a normal distributionwith a mean of 2,500 units and a standard deviation of 425 units.Given this, please provide the following answers forJohn.a....
- Q Engineers concerned about a tower's stability have doneextensive studies of its increasing tilt. Measurements of the leanof the tower over time provide much useful information. Thefollowing table gives measurements for...
- Q Many regions in North and South Carolina and Georgia haveexperienced rapid population growth over the last 10 years. It isexpected that the growth will continue over the next 10 years....
- Q Giving a test to a group of students, the grades and gender aresummarized belowABCTotalMale13152048Female1991038Total32243086If one student was chosen at random,find the probability that the student was female.this is the full...
- Q 1. Nonparametric tests should not be used when ______.the dependent variables are ordinal scalesthe assumptions of parametric tests are metthe associations being tested involve categorical variablesthe population distribution is heavily...
- Q PROBLEM 3The average grade point average (GPA) of undergraduate studentsin New York is normally distributed with a population mean of 2.8and a population standard deviation of 0.75(I) The percentage of...
- Q -Identify why you choose to perform the statistical test (Signtest, Wilcoxon test, Kruskal-Wallis test).-Identify the null hypothesis, Ho, and the alternativehypothesis, Ha.-Determine whether the hypothesis test is left-tailed,right-tailed, or two-tailed.-Find...
- Q Pay your taxes: According to the InternalRevenue Service, the proportion of federal tax returns for which notax was paid was =p0.326. As part of a tax audit, tax officialsdraw a...
- Q Suppose the weights of Farmer Carl's potatoes are normallydistributed with a mean of 8.2 ounces and a standard deviation of1.3 ounces.(a) If 4 potatoes are randomly selected, find the probabilitythat...
- Q Spertus et al. performaed a randomized single blind study forsubjects with stable coronary artery disease. They randomizedsubjects into two treatments groups. The first group had currentangina medications optimized and the...
- Q Problem 6: Researchers are testing two new cholesterolmedications. Medication is given to some males and females and aplacebo is given to others. The tablesbelow summarize the resultingHDL cholesterol levels after...
- Q Which of the following variables yields data that would besuitable for use in a histogram? __________the time concentrating on a math problemcolor of hairbrand of TVgender of a student
- Q In a recent issue of Consumer Reports, Consumers Union reportedon their investigation of bacterial contamination in packages ofname brand chicken sold in supermarkets. Packages of Tyson andPerdue chicken were purchased....
- Q For a standard normal distribution, what is theprobability that z is greater than 1.65
- Q The price of a gallon of milk at 16 randomly selected Arizonastores is given below. Assume that milk prices are normallydistributed. At the ?=0.10?=0.10 level of significance, is thereenough evidence...
- Q A five (5) page Reflective Journal reflecting on the processeswhich can be utilised to collect data while conducting research aswell as on tools to analyse data collected in the researchprocess.
- Q Have we learned from past mortgage mistakes? Are the practicesand the products that caused the mortgage crisis gone? How is thecurrent stance of the mortgage markets and mortgage borrowing? Whatare...
- Q A study found that the mean amount of time cars spent in?drive-throughs of a certain? fast-food restaurant was157.6157.6seconds. Assuming? drive-through times are normally distributedwith a standard deviation of3434?seconds, complete parts?...
- Q 2. a. Use signifcance test to test the indicated claim. Astandard aptitude test is given to several randomly selectedprogrammers, and the scores are given below for the mathematics andverbal portions...
- Q 1. A consumer group is testing camp stoves. To test the heatingcapacity of a stove, they measure the time required to bring 2quarts of water from 50 degrees to boiling.Two...
- Q What’s the probability of getting no heads after flipping a faircoin 10 times? What’s the probability of getting no 3’s afterrolling a fair 6-sided die 9 times? What’s the probability...
- Q Time spent using? e-mail per session is normally? distributed,with mu equals ?=12 minutes and sigma equals ?=3 minutes. Assumethat the time spent per session is normally distributed. Completeparts? (a) through?...
- Q A manufacturing company produces electric insulators. You definethe variable of interest as the strength of the insulators. If theinsulators break when in? use, a short circuit is likely. To testthe...
- Q A concessions manager at the Tech versus A&M football gamemust decide whether to have the vendors sell sun visors orumbrellas. There is a 35% chance of rain, a 25% chance...
- Q According to the National Eye Institute, 8% of men are red-greencolorblind. A sample of 125 men is gathered from a particularsubpopulation, and 13 men in this sample are colorblind.(Withoutusing z-value)a....
- Q In Lesson Ten you’ve worked with techniques for conductinghypothesis tests for two means or two proportions. Work through thefollowing exercise.Two types of medication for hives are being tested. Themanufacturer claims...
- Q In California, we need more rain to sustain the health of ournatural environment, argriculture, and economic. A group ofstatistics students in Oxnard College recorded the amount of rainduring 2016-2017 school...
- Q The number of chocolate chips in a bag of chocolate chip cookiesis approximately normally distributed with a mean of12611261chips and a standard deviation of118118chips. ?(a) Determine the2525thpercentile for the number...
- Q he mean gas mileage for a hybrid car is5656miles per gallon. Suppose that the gasoline mileage isapproximately normally distributed with a standard deviation of3.23.2miles per gallon.? (a) What proportion of...
- Q Analysis of this paragraph along withthe overall analysis of poem "HerKind" by Anne Sexton.This paragraph belongs to the same poem as mentionedabove.I have found the warm caves in the woods,filled...
- Q Theheight of females in the United States follows a normaldistribution with a mean of 65 inches and a standard deviation of 2inches.What height marks the median?
- Q It is thought that basketball teams that make too many fouls ina game tend to lose the game even if they otherwise play well. Letx be the number of fouls...
- Q a) Prove, using the joint density function, and the definitionof expectation of a function of two continuous randomvariables (i.e., integration) that E (5X + 7Y ) = 5E (X )...
- Q The table below gives the age and bone density for five randomlyselected women. Using this data, consider the equation of theregression line, y ˆ = b 0 + b 1...
- Q Edit question Suppose in an effort to manage his inventorylevels better, the owner of two steak and seafood restaurants, bothlocated in the same city, hires a statistician to conduct astatistical...
- Q Construct a 95?% confidence interval to estimate the populationmean when x bar =124 and s? =29 for the sample sizes below.?a)n=40??????b)n=50????????c)n=90round to 2 decimale places as needed
- Q A researcher conducts an independent-measures study. One sampleof individuals serves as a control group and another sample servesas a treatment group. The researcher hypothesizes that the twosamples will be different...
- Q Please find the range, sample standard deviation andinter-quartile range (IQR) of the following data set usingTI-84.34414446465054698096range = _____ (Please enter an exact answer.)standard deviation (ss) = _______ (Please show your...
- Q In how many ways can a five horse race end, allowing for thepossibility thattwo horses tie?
- Q part 1An independent measures study was conducted to determine whether anew medication called "Byeblue" was being tested to see if itlowered the level of depression patients experience. There were twosamples,...
- Q How do you plot continuous versus category in r studio
- Q Different varieties of the tropical flower Heliconia arefertilized by different species of hummingbirds. Over time, thelengths of the flowers and the form of the hummingbirds' beaks haveevolved to match each...
- Q The following table was derived from a study of HIV patients,and the data reflect the number of subjects classified by theirprimary HIV risk factor and gender. Test if there is...
- Q Allen's hummingbird (Selasphorus sasin) has beenstudied by zoologist Bill Alther.† Suppose a small group of 14Allen's hummingbirds has been under study in Arizona. The averageweight for these birds is x...
- Q In 2010, Dr. Bob decided to gather research on the type ofdisorders that present among his patients. His data collectionresulted in the following breakdown of patients by disorder: 54.9%Schizophrenia; 21.1%...
- Q Please attach R code:Use library(nycflights13) a. plot histogram for distance wherecarrier is "FL". Print graph(s). b. plot Two box plots side by sidefor distance where carrier are "FL" and “US”....
- Q The mean income per year of employees who produce internal andexternal newsletters and magazines for corporations was reported tobe $76300. These editors and designers work on corporatepublications but not on...
- Q A bakery would like you to recommend how many loaves of itsfamous marble rye bread to bake at the beginning of the day. Eachloaf costs the bakery ?$4.00 and can...
- Q A researcher suspects the mean trough (the lowest dosage ofmedication required to see clinical improvement of symptoms) levelfor a medication used to treat arthritis is higher than waspreviously reported in...
- Q A poll found that 74% of a random sample of 1029 adults saidthat they believe in ghosts.determine the margin of error
- Q Monte Carlo SimulationTully Tyres sells cheap imported tyres. The manager believes itsprofits are in decline. You have just been hired as an analyst bythe manager of Tully Tyres to investigate...
- Q Lester Hollar is vice president for human resources for a largemanufacturing company. In recent years, he has noticed an increasein absenteeism that he thinks is related to the general health...
- 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 Create a modeland use Excel Solver to answer the following: A computercompany manufactures two types of computers. Each type of computerwill require assembly time, inspection time, and storage space. Theamounts...
- Q Using the normal approximation, find the approximate probabilityof at most 16 successes of 40. You may need to consult your z tableor the shiny app
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