To test whether the mean time needed to mix a batch of material is the same for machinesproduced by three manufacturers, the Jacobs Chemical Company obtained the followingdata on the time (in minutes) needed to mix the material).Manufacturer 1Manufacturer 2Manufacturer 3202820262619243123223122213220a. Use these data to test whether the population mean times for mixing a batch ofmaterial differ for the three manufacturers. Use a =0.05. Summarize your answersin an ANOVA table.b. At the a=0.05 level of significance, use Fisher's LSD procedure to test for theequality of the means for manufacturers 1 ,2 and 3

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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 Manufacturer 2 Manufacturer 3 20 28 20 26 26 19 24 31 23 22 31 22 21 32 20

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 Manufacturer 2 Manufacturer 3 20 28 20 26 26 19 24 31 23 22 31 22 21 32 20

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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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
Manufacturer 2
Manufacturer 3
20
28
20
26
26
19
24
31
23
22
31
22
21
32
20
a. Use these data to test whether the population mean times for mixing a batch of
material differ for the three manufacturers. Use a =0.05. Summarize your answers
in an ANOVA table.
b. At the a=0.05 level of significance, use Fisher's LSD procedure to test for the
equality of the means for manufacturers 1 ,2 and 3

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