Question

In: Statistics and Probability

Four laboratories are being used to perform chemical analysis. Samples of the same material are sent...

Four laboratories are being used to perform chemical analysis. Samples of the same material are sent to the laboratories for analysis as part of the study to determine whether or not they give, on average, the same results. Assume the distributions of results for the laboratories are of the same shape but not normal. The analytical results of the sample material are as follows:

A

B

C

D

78

62.7

55.9

60.7

61.4

64.5

56.1

60.3

60.9

63.1

57.3

61.4

59.1

59.2

55.2

60.9

58.2

60.3

58.1

62.3

Test if the laboratories give the same results on average. Use a = 0.005.

Solutions

Expert Solution

The above problem is solved using Minitab, the output of Minitab is attached below.

Dear student,
I am waiting for your feedback. I have given my 100% to solve your queries. If you satisfied with my answer then please please like this.
Thank You


Related Solutions

Four laboratories are being used to perform chemical analysis. Samples of the same material are sent...
Four laboratories are being used to perform chemical analysis. Samples of the same material are sent to the laboratories for analysis as part of the study to determine whether or not they give, on average, the same results. Assume the distributions of results for the laboratories are of the same shape but not normal. The analytical results of the sample material are as follows: A B C D 97 62.7 55.9 60.7 61.4 64.5 56.1 60.3 60.9 63.1 57.3 61.4...
In a collaborative trial, four laboratories were sent samples from the same batch of a pharmaceutical...
In a collaborative trial, four laboratories were sent samples from the same batch of a pharmaceutical product and requested to perform ten assays and report the results based on percentage of a labeled amount of the drug Lab Score Lab A 100 Lab A 99.8 Lab A 99.5 Lab A 100.1 Lab A 99.7 Lab A 99.9 Lab A 100.4 Lab A 100 Lab A 99.7 Lab A 99.9 Lab B 99.5 Lab B 100 Lab B 99.3 Lab B...
if a chemist observes the density of four different samples of the same metal to be...
if a chemist observes the density of four different samples of the same metal to be 4.56 g/cm3, 4.50 g/cm3, 4.57 g/cm3 and 4.52 g/cm3, can we say that his work is precise? what would have to be known to say that his work is accurate?
Being aware of your expertise in microbiology a colleague has sent you four different strains of...
Being aware of your expertise in microbiology a colleague has sent you four different strains of unknown bacteria and asks you to help in identifying each isolate. Table 1 lists some characteristics you have determined for each isolate (Strain A, Strain B, Strain C and Strain D). Table 1. Characteristics of four unknown bacteria isolates. Test Strain A Strain B Strain C Strain D Gram stain Gram positive Gram negative Gram positive Gram positive Cell morphology Rod Rod Rod Coccus,...
A crusher was used to crush a material and the screen analysis of the product is:...
A crusher was used to crush a material and the screen analysis of the product is: Size if aperture (mm) Mass retained % 6 0 4 26 2 18 0.75 23 0.50 8 0.25 17 0.125 3 pan 5 Calculate the: volume-surface mean diameter arithmetic mean diameter mass mean diameter volume mean diameter. specific surface area (mm2/g) and the total particles/g of  the sample given that the density of the particles is 0.00265 g/mm3, the shape factor and the sphericity are...
Explain the Coordination Chemistry and Chemical Speciation Utilized in the Analysis of Fluoride in Water Samples...
Explain the Coordination Chemistry and Chemical Speciation Utilized in the Analysis of Fluoride in Water Samples by Fluoride Ion-Selective Electrode.
Explain the Coordination Chemistry and Chemical Speciation Utilized in the Analysis of Fluoride in Water Samples...
Explain the Coordination Chemistry and Chemical Speciation Utilized in the Analysis of Fluoride in Water Samples by Fluoride Ion-Selective Electrode.
What kind of data lend themselves to perform an analysis of variance and/or an independent-samples t...
What kind of data lend themselves to perform an analysis of variance and/or an independent-samples t test? Given your answer above, why should you use analysis of variance instead of just using an independent-samples t test?
What kind of data lend themselves to perform an analysis of variance and/or an independent-samples t...
What kind of data lend themselves to perform an analysis of variance and/or an independent-samples t test? Given your answer above, why should you use analysis of variance instead of just using an independent-samples t test?
Analysis of the tensile strength of 100 samples of a new polymeric material, obtained from each...
Analysis of the tensile strength of 100 samples of a new polymeric material, obtained from each of the two production lines of a company gave the following mean and standard deviation values (in MPa) Line 1 Line 2 sample size 100 100 mean 33.9 35.8 Standard Deviation 5.83 5.92 a. Use 5 % significant level can it be concluded that there is no difference in the tensile strength of the products obtained from the two production lines? b. Using 95%...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT