4. A completely randomized block experiment was devised to test four different detergents as to their effectiveness. Three different washing machines were employed in the process. The raw data is given below. Machine II Detergent 1 Detergent 2 Detergent 3 Detergent 4 53 50 59 54 54 60 56 58 62 50 45 57 The results of the Randomized Complete Block Design Analysis of Variance follow: Analysis of Variance Table Df Sum Sq Mean Sq F value Pr(>F) factor(machine) 135.1667 67.58333 18.29323 0.002797 factor(detergent) 3 102.3333 34.1111 9.233083 0.01149 Residuals 6 22.1667 3.6944 a. Is there no significant difference in the means scores for effectiveness between the four detergents? Why? b. Is "blocking" effective in isolating a major source of variability of the dependent variable? Why or why not?

4. A completely randomized block experiment was devised to test four different detergents as to their effectiveness. Three different washing machines were employed in the process. The raw data is given below. Machine II Detergent 1 Detergent 2 Detergent 3 Detergent 4 53 50 59 54 54 60 56 58 62 50 45 57 The results of the Randomized Complete Block Design Analysis of Variance follow: Analysis of Variance Table Df Sum Sq Mean Sq F value Pr(>F) factor(machine) 135.1667 67.58333 18.29323 0.002797 factor(detergent) 3 102.3333 34.1111 9.233083 0.01149 Residuals 6 22.1667 3.6944 a. Is there no significant difference in the means scores for effectiveness between the four detergents? Why? b. Is "blocking" effective in isolating a major source of variability of the dependent variable? Why or why not?

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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Hi, I'm stuck with question 2. Question 1 given the example for this question
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Sgdhfjyjygfgdvdvrhhti5oyoggadadsbgngbdfegrhfgrhefefegthgjglhlyhsdCfbvngkyhadafdhfjgkghadqsagdjgkhdvsvdbgnfvsvdbdbdbdbfbdvdgdgeggdgc fsvdbfhth sbdvdgrgrhg13. Six random determinations of sulfur content in steel at a particular point in a process gave the values 3.07, 3.11, 3.14, 3.24, 3.16, and 3.08. Assume the values are normally distributed. A previous study based on a sample of 21 random observations gave an estimate of variance of 1.51 × 10–3. Use the 10% level of significance. a. Compute for the new sample variance. b. Using the variance ratio, is the variance significantly higher now? Justify your answer.grhhjhmhbdcscfngbsvngbevfngnfjgjyoisfaxacsvdbfhfbdvsvsvdvdvdbdbźvdbfngnmklljfhsfadsfsvdbfbfngngkyoosdadwdsvdbfnfnfjgnjfjdvevdbbfngntjfhrhrhdgdgdvdhdhdbgdvgdfbfhfhtj
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