Statistics question and answers for July 19, 2023
- Q Discuss the reasons and situations in which researchers wouldwant to use linear regression. How would a researcher know whetherlinear regression would be the appropriate statistical technique touse? What are some...
- Q We when run a hypothesis test, we are looking to verify a claimabout a population parameter. Why is it important that we have astatistical tool to allow us to do...
- Q What are the differences between MANOVA and discriminantanalysis? What situations best suit each multivariatetechnique?
- Q a) If the probabilities that Joan, Beverly and Evelyn will beelected secretary of a ski club are 1/8, 2/5, and 1/3 respectively,find the probability that one of the three will...
- Q The length of time needed to complete a certain test is normallydistributed with mean 77 minutes and standard deviation 11 minutes.Find the probability that it will take between 74 and...
- Q A manufacturer of chocolate chips would like to know whether itsbag filling machine works correctly at the 433 gram setting. It isbelieved that the machine is underfilling the bags. A...
- Q The data set is height in inches and weight in pounds of randompatients at the Dr's office.Predict theweight of a patient that is 67 inches tall.Isit possible to predict using...
- Q Using appropriate examples(i) differentiate between structured and unstructured data(ii) discuss the need for alternative techniques of dataanalysis between the two
- Q JC Manufacturing (JCM) has a policy for its raw materials tokeep 1 week’s (or ¼ month’s) supply as safety stock for every itemit carries. For one item, it uses an...
- Q Using the informationfrom the following scenario, conduct a one-way ANOVA and specifythe LSD post hoc test.ScenarioThe superintendent iscontinuing to examine the data that has been reported for thedistrict. Another question...
- Q Answer the within-subjects ANOVA questions using the data below.Use α = 0.05.123453493842513444442936343930124637393736344725223027332831a) Compute the preliminary statistics below.SSBG =  ; dfBG =  SSBS =  ; dfBS =  SSE =  ; dfE =  SST =  ; dfT =  b) Compute...
- Q Discuss the assumptions that are inherent in production setupcost, ordering cost and carrying cost. How valid are they?
- Q Discuss five sources of unstructured data, why analysis of thesedata are important and use examples to support your answers.
- Q A sample of 45 movie tickets had a mean price of $9.50 with astandard deviation of $1.50. Find the 95% confidence interval forthe population mean of the price of movie...
- Q The weights of a certain brand of candies are normallydistributed with a mean weight of0.8612g and a standard deviationof 0.0514g. A sample of these candies came from a packagecontaining 452...
- Q The article \"Repeatability and Reproducibility for Pass/FailData\"†reported that in n = 48 trials in a particularlaboratory, 16 resulted in ignition of a particular type ofsubstrate by a lighted cigarette....
- Q 5.How can the 24 month distribution of HIV stigma scores for theintervention groups be described in terms of shape?
- Q Consider a flight of stairs with ? stairs. Larry Bird can takeone, two or three stairs in a single stride. Find a recurrencerelation for ?(?), the number of different ways...
- Q For the following questions, use the research questionand context to determine the type of test required:1. A researcher is interested in knowing whether the proportionof people who live past the...
- Q The supervisor of a manufacturing plant is trying to determinehow many of two parts, Part X and Part Y, are to be produced perday. Each part must be processed in...
- Q For this problem, five cotton varieties were selected from alarger study of yield stability. The objective was to determine ifthere are differences among the mean weight of the fiber for...
- Q The mayor of a town has proposed a plan for the annexation of anew bridge. A political study took a sample of 900 voters in thetown and found that 66%...
- Q what is the difference between absolute risk and relative risk inepidemiology? and how are both calculated ?
- Q In a random sample of 39 criminals convicted of a certain​crime, it was determined that the mean length of sentencing was66​months, with a standard deviation of 14 months. Construct andinterpret...
- Q Customers are arriving to a shop according to Poisson processwith mean 3.2 customers/hour. What is the probability that the nextcustomer will arrive after 10 minutes but before 33 minutes?
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