9 For numbers 8 to 10: The owner of a newly opened bakery is interested to know if the mean moisture content of bread significantly differs among three available storageconditions in his bakery. Given that all the assumptions for the appropriate test procedure are satisfied, the partial ANOVA table is given below.Source of variationdfSum of squaresAmong storage conditions20.6476Within storage conditions270.2025Total290.85019. The value of the appropriate test statistic isO A. 0.02O B. 0.31O C 3.20O D. 43.17Activato Wind ows

Solution: Given information: k= 3 groups n= 30 total observation SSA = 0.6476 Sum of square of…

Answered: For numbers 8 to 10: The owner of a…

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 researcher conducted a t-test for independent samples to evaluate the mean difference between two treatment conditions and obtained t(48) = 4.00. What would be the computed F, if the outcomes of this study were evaluated by one-actor ANOVA for independent samples?
A z-score of –1.6 has a corresponding Stanine score of:
The tests of assumptions for yield gave values for Levene’s statistic and Shapiro-Wilk’s as 0.0562 and .00271, respectively. At a=0.05 , which statistical test is most appropriate to compare the yield among the nitrogen rates? a. Cochran’s Q B. Friedman’s C. Kruskal Wallis test . D. Anova F-test
State the t critical value that would be used for a 99% interval based on a sample size of 37.
For nos. 29 to 32.Mr. Juan Rafael, the manager of JJ Computer Tech is conducting a study on the number of customers who pay by personal check, by credit card and by debit card. During the course of five days, he records the following number of purchases made by each method. 29. What is the grand total of all the observations?A. 121B. 153C. 205D. 47930. What is the critical F value at a 5% significance level?A. 0.13B. 3.08C. 3.89D. 7.6531. What is the F-computed value?A. 7.65B. 3.89C. 3.08D. 0.1332. What should be the conclusion as a result of the analysis?A. The number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech are the same.B. At least two of the methods of payment in purchasing at JJ Computer Tech are significantly different.C. There is a significant difference in the number of customers who pay by personal check, by credit card, and by debit card at JJ Computer Tech.D. There is no significant difference in the number of customers who…
Which of the following bits of information is referenced first in an APA formatted statistical report of the results regarding a two-factor ANOVA? a. the F-ratio b. partial eta squared as a measure of effect size c. the df for the F-ratio test d. means and standard deviations for all factor conditions
use an x^2 test to test the clain o^2 = 0.53 at the a=0.10 signifigance level using sample statistics s^2 = 0.495 and n=18. assume the population is normally distributed
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers, the Jacobs Chemical Company obtained the following data on the time (in minutes) needed to mix the material. Manufacturer 1 2 3 19 32 23 25 30 22 23 35 26 21 31 25 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use alpha=0.05. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Treatment ? Sum of Squares, Error ? Mean Squares, Treatment ? Mean Squares, Error ? Calculate the value of the test statistic (to2 decimals)? The p-value is? What is your conclusion? b. At the 0.05 level of significance, use Fisher's LSD procedure to test for the equality of the means for manufacturers 1 and 3. Calculate Fisher's LSD Value (to 2 decimals)? What conclusion can you draw after carrying out this test?
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Serum nitrite concentrations (in μmol/L) were compared between a group of unmedicated HIV+ subjects (n =7) and a control group (n = 10). The HIV+ distribution is strongly skewed. a) Use a Wilcoxon-Mann-Whitney U test to determine if there is convincing evidence at α = 0.05 thatserum nitrite levels differ between the two populations. b) What would have been the U test p-value if researchers had instead hypothesized that serum nitriteconcentrations would tend to be larger in the HIV+ population?
Are the following results significant at α=.01? F(2,27) =10.56, p=.02 Yes No 2. A large F-ratio (or a significant result) is the result of: a small amount variability within the groups and a large amount of variability between the groups a large amount variability within the groups and a small amount of variability between the groups a large amount variability within the groups and a large amount of variability between the groups a small amount variability within the groups and a small amount of variability between the groups
The melting point of each of 20 samples of a certain brand of hydrogenated vegetable oil was determined, resulting in x¯=94.32x¯=94.32. Assume that the distribution of the melting point is normally distributed with a σ=1.20σ=1.20. Test the claim that the mean melting point of hydrogenated vegetables is less than 95. a.What is the appropriate alternative hypothesis? b.What is the value of the test statistic?d. c.What is the corresponding p-value? d.What is the confidence interval for the mean melting point of hydrogenated vegetable?

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