To test whether the actual mean time needed to mix a batch of material is the...
To test whether the actual mean time needed to mix a batch of material is the same for machines, the Jacobs Chemical Company obtained the following random sample data of the time (in minutes) needed to mix the exact same material by three different brand machines.
| Machine #1 | Machine #2 | Machine #3 | |
| Sample Size |
7 |
5 | 8 |
| Sample Means | 26 | 27 | 22 |
| Sample Variances | 22.25 | 28.09 | 18.49 |
a) State H0 and Ha in plain English.
b) Use an alpha of 0.05 to test whether the real average times for mixing the same batch of material differ for the three machines. What is the P-value? What are your conclusions (statistical and in plain English)?
Homework Answers
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To test whether the actual mean time needed to mix a batch of
material is the...
To test whether the mean time needed to mix a batch of material is the same...
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 25 31 29 27 Manufacturer 2 31 29 34 30 17 16 20 19 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use α .05 Compute...
To test whether the mean time needed to mix a batch of material is the same...
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 21 27 24 27 24 18 24 30 24 18 24 21 Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use = .05....
To test whether the mean time needed to mix a batch of material is the same...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
21
27
19
26
27
19
23
31
23
26
23
23
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturer...
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 2 3 27 21 21 25 19 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use α = .05 the values below (to 2 decimals,...
To test whether the mean time needed to mix a batch of material is the same for machines produced by three manufacturers...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
20
28
20
25
25
18
24
32
24
27
27
18
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
To test whether the mean time needed to mix a batch af material is the same...
To test whether the mean time needed to mix a batch af 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 use these data to test whether the pptation mean times for moing a batch d material difrir Compute the values belaw (to 2 decma's, necessary) Sum of Squares, Treatment |-78 Sum of Squares, Error Moan Squares, Treatment39 Moan Squares, Error...
To test whether the mean time needed to mix a batch of material is the same...
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. Manufacture 1 2 3 18 27 24 27 24 18 21 33 24 18 27 21 a. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Error Mean Squares, Error Fisher's LSD Value b. Use Fisher's LSD...
To test whether the mean time needed to mix a batch of material is the same...
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. Manufacture 18 24 21 21 27 27 24 21 27 18 a. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Error Mean Squares, Error Fishers LSD Value b. Use Fisher's LSD procedure to develop a 95%...
To test whether the mean time to mix a batch of adhesive is the same for...
To test whether the mean time to mix a batch of adhesive is the same for machines produced by four manufacturers, TiteBondMax obtained DATA on the time (minutes) needed to mix the materials. Test whether the machines have equal mean mixing time at α=0.01. Manufacturer A B C D 25 23 25 22 23 21 25 23 21 23 25 23 23 24 21 22 Please help to select one of the following options: The pvalue 0.0001 is extreme evidence...
eBook Video To test whether the mean time needed to mix a batch of material is...
eBook Video 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 20 28 20 26 26 19 24 31 23 22 27 22 Use Fisher's LSD procedure to develop a 95% confidence interval estimate of the difference between the means for manufacturer 1 and manufacturer...
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 25 31 29 27 Manufacturer 2 31 29 34 30 17 16 20 19 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use α .05 Compute...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
21
27
19
26
27
19
23
31
23
26
23
23
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
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 2 3 27 21 21 25 19 a. Use these data to test whether the population mean times for mixing a batch of material differ for the three manufacturers. Use α = .05 the values below (to 2 decimals,...
To test whether the mean time needed to mix a batch of material
is the same for machines produced by three manufacturers, a
chemical company obtained the following data on the time (in
minutes) needed to mix the material.
Manufacturer
1
2
3
20
28
20
25
25
18
24
32
24
27
27
18
(a)
Use these data to test whether the population mean times for
mixing a batch of material differ for the three manufacturers.
Use
α =...
To test whether the mean time needed to mix a batch af 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 use these data to test whether the pptation mean times for moing a batch d material difrir Compute the values belaw (to 2 decma's, necessary) Sum of Squares, Treatment |-78 Sum of Squares, Error Moan Squares, Treatment39 Moan Squares, Error...
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. Manufacture 18 24 21 21 27 27 24 21 27 18 a. Compute the values below (to 2 decimals, if necessary). Sum of Squares, Error Mean Squares, Error Fishers LSD Value b. Use Fisher's LSD procedure to develop a 95%...
eBook Video 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 20 28 20 26 26 19 24 31 23 22 27 22 Use Fisher's LSD procedure to develop a 95% confidence interval estimate of the difference between the means for manufacturer 1 and manufacturer...
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