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Social ScienceOil field pipes are internally coated in order to prevent corrosion. Researchers at a university investigated the influence that coating may have on thesurface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 10sections of coated interior pipe. The data (in micrometers) are shown in the table to the right. A Minitab analysis of the data is given below. Completeparts a and b.1.772.371.242.152.332.451.012011.921.51One-Sample T: ROUGH95% CI0.15543 (1.52439, 2.22761)SE MeanStDevMeanNVariable1.876000.4915110ROUGHa. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout(Type integers or a decimals.)frect:?Enter your answer in the edit flelds and then click Check AnswerChec AnsierCearAl1 partremainingaere to search
TI 84 steps. Round to 5 decimals
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Oil field pipes are internally coated in order to prevent corrosion. Researchers at a university investigated the influence that coating may have on the surface roughness of oil field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 10 sections of coated interior pipe. The data (in micrometers) are shown in the table to the right. A Minitab analysis of the data is given below. Complete parts a and b. 1.77 2.37 1.24 2.15 2.33 2.45 1.01 201 1.92 1.51 One-Sample T: ROUGH 95% CI 0.15543 (1.52439, 2.22761) SE Mean StDev Mean N Variable 1.87600 0.49151 10 ROUGH a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout (Type integers or a decimals.) frect: ? Enter your answer in the edit flelds and then click Check Answer Chec Ansier CearAl 1 part remaining a ere to search
Expert Answer
Solution: We are given the below data in the question:
1.77, 2.37, 1.24, 2.15, 2.33, 2.45, 1.01, 2.01, 1.92, 1.51
We have to find the 95% confidence interval for the mean surface roughness of coated interior pipe.
We are given the minitab output.
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One-Sample T: ROUGH SE Mean 0.15543 (152439, 2.22761) 95% CL StDev Variable N Mean 1.87600 0.49151 ROUGH 10
Therefore, the 95% confidence i...
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(52439,2.22761)
Math
Statistics
Hypothesis Testing
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