Just phase 1 O cis3300_exam3_minitab_case_pro XFreeTaxUSA® -- Sign In2020 Form 709P Pearson++O XA plus.pearson.com/courses/6029479/products/131213/pages/462?locale=&platformld=1030&iesCode=EZK9WIIOWRQUpdate :Chapter 11: Analysis of VarianceЕВSearchAmerican5.61.8team. Indicate the importance of the piece size and the fill heighton the weight of the canned cat food. Be sure to include a recom-American9.55.1American4.14.2Q 430Clearmendation for the level of each factor that will come closest toAmerican7.94.9meeting the target weight and the limitations of this experiment,along with recommendations for future experiments that might beAmerican9.44.0All resultsPages (1)Content (4)undertaken.11.42 A pet food company has the business objective of having theweight of a can of cat food come as close to the specified weightas possible. Realizing that the size of the pieces of meat containedQPagesСНАРТER10Page 43011"CASESContentSee allAA430 CHAPTER 11 | Analysis of Variance TYPE OF1. Analyze the data in Table AMS11.1 and write a report to thecomputer operations department that indicates your findings.Include an appendix in which you discuss the reason youselected a particular statistical test to compare the three emailinterfaces.Managing Ashland MultiComm ServicesBREAKFAST 35.2 43.6 33.7 38.1...PHASE 1The computer operations department had a business objec-tive of reducing the amount of time to fully update each sub-scriber's set of messages in a special secured email system.An experiment was conducted in which 24 subscribers wereselected and three different messaging systems were used.Eight subscribers were assigned to each system, and theupdate times were measured. The results, stored in AMS11-1.are presented in Table AMS11.1.CHAPTER REVIEW PROBLEMS 428 CASES FORCHAPTER 11 430 Managing Ashland Multicomm...DO NOT CONTINUE UNTIL THE PHASE 1 EXERCISE HASBEEN COMPLETED.PHASE 2After analyzing the data in Table AMS11.1, the computer oper-ations department team decided to also study the effect of theconnection media used (cable or fiber).TABLE AMS11.1Update Times (in seconds) for Three Different SystemsThe team designed a study in which a total of 30 subscriberswere chosen. The subscribers were randomly assigned to one ofthe three messaging systems so that there were five subscribersin each of the six combinations of the two factors-messagingsystem and media used. Measurements were taken on theupdated time. Table AMS11.2 summarizes the results that arestored in AMS11-2.System 1System 2System 338.841.832.942.136.436.145.239.139.234.828.729.348.336.441.937.836.131.741.135.835.243.633.738.1Hide12:03 AMO Type here to search37°F Clear12/13/2021近!!!

Given information: The data represents values of updated times for 3 different systems.

Answered: The computer operations department had…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A random sample of 10 from population 1 had a variance of 3.600, while a sample of 15 from population 2 had a variance of 2.400. Test the hypothesis, at the 5% level of significance, that the two population variances are the same. State your conclusion as a sentence including the test statistic and the critical value.
A researcher randomly sampled 30 graduates of an MBA program and recorded data concerning their starting salaries. Of primary interest to the researcher was the effect of gender on starting salaries. The result of the pooled-variance t-test of the mean salaries of the females (Population 1) and males (Population 2) in the sample is given in the accompanying table. The researcher was attempting to show statistically that the female MBA graduates have a significantly lower mean starting salary than the male MBA graduates. Which of these is an appropriate alternative hypothesis? A. H1:μfemales≠μmales B. H1:μfemales>μmales C. H1:μfemales<μmales D. H1:μfemales=μ
In a study conducted on the variance of weights of bread produced daily in a bread factory, the average weight of 51 breads was calculated as 400gr and variance as 700. Since the variance of bread weights is claimed to be more than 500, what is the alternative hypothesis and test result at the 5% significance level under the assumption that the data are normally distributed? Please choose one: a. Ha: variance is less than 500 and Ho cannot be denied b. Ha: variance is greater than 500 and Ho is rejected . c. Ha: variance is less than 500 and Ho is rejected. D. Ha: variance is greater than 500 and Ho cannot be denied.
A manufacturer of a computer system is interested in improving its customer support services. As a first step its marketing department has been charged with the responsibility of summarizing the extent of customer problems in terms of system failures. Over a period of six months, customers were surveyed and the amount of downtime (in minutes) due to system failures they had experienced during the previous month was collected. The average downtime was found to be 25.09 min and a variance of 144. If it can be assumed that downtime is normally distributed. Obtain a bound above 10% of the downtime of all the customers.
Post hoc test such as scheffe and turkeys HSD, are never necessary for an analysis of variance comparing only two treatment conditions? True or False?
A data set from a study that examined the effect of a specific diet on blood pressure is below. Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. Evaluate the homogeneity of variance assumption for the test and report the results (i.e., is the assumption reasonable for this analysis/data set?). Biofeedback Drug Diet BldPres Present X Absent 170 Present X Absent 175 Present X Absent 165 Present X Absent 180 Present X Absent 160 Present X Absent 158 Present X Present 161 Present X Present 173 Present X Present 157 Present X Present 152 Present X Present 181 Present X Present 190 Present Y Absent 186 Present Y Absent 194 Present Y Absent 201 Present Y Absent 215 Present Y Absent 219 Present Y Absent 209 Present Y Present 164 Present Y Present…
what does MS stand for in analysis of variance?
A researcher would like to conduct a hypothesis test to determine if the mean age of faculty cars is less than the mean age of student cars. A random sample of 25 student cars had a sample mean age of 7 years with a sample variance of 20, and a random sample of 32 faculty cars had a sample mean age of 5.8 years with a sample variances of 16. What is the critical value of the rejection region if the difference is taken as student - faculty and the test is conducted using a 5% significance level?
A researcher studied iron-deficiency anemia in women in each of two developing countries. Differences in the dietary habits between the two countries led the researcher to believe that anemia is less prevalent among women in the first country than among women in the second country. A random sample of 2400 women from the first country yielded 698 women with anemia, and an independently chosen, random sample of 1700 women from the second country yielded 544 women with anemia.Based on the study can we conclude, at the 0.10 level of significance, that the proportion p1 of women with anemia in the first country is less than the proportion p2 of women with anemia in the second country?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places and round your answers as specified in the parts below. (If necessary, consult a list of formulas.) A. Find the value of the test statistic and round to 3 or more decimal places. (I have…
One major assumption with independent t tests is called “homogeneity of variances.” Describe this assumption.
A company that manufactures cars wants to estimate the variance of kilometers per liter for its newest car model. A random sample of 24 cars of this model showed that the variance of kilometers per liter for these cars is 0.58. Test at 1% significance level if the sample result indicates that the population variance is different from 0.30.
please explain thoroughly the Test of Homogeneity of Variances and Why Post Hoc Tukey HSD is the appropriate model. thanks

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