1.67 230 oil field pipes are internally coated in order to prevent corrosion, Rachers at a university investigated the infuence that conting 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 12 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 One-Sample T. ROUGH Variable N Mean StDev SE Mean 95% CI ROUGH 12 1.97250038296 0.11055 (1.72916, 2.21582) a. Locale a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout 0 (Type Integers or a decimals.) 201 231 2.18 2:49 1.37 2.12 1.97 1.52 221 Question Help 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 12 sections 1.67 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 2.38 b. One-Sample T. ROUGH 2.01 Variable N Mean StDev SE Mean 95% CI 2.31 ROUGH 12 1.97250 0.38296 0.11055 (1.72918. 221582) 218 a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout. C (Type integers or a decimals.) 144 2.49 1.37 2.12 1.97 1.52 2.21 1.67 230 oil field pipes are internally coated in order to prevent corrosion, Rachers at a university investigated the infuence that conting 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 12 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 One-Sample T. ROUGH Variable N Mean StDev SE Mean 95% CI ROUGH 12 1.97250038296 0.11055 (1.72916, 2.21582) a. Locale a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout 0 (Type Integers or a decimals.) 201 231 2.18 2:49 1.37 2.12 1.97 1.52 221 Question Help 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 12 sections 1.67 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 2.38 b. One-Sample T. ROUGH 2.01 Variable N Mean StDev SE Mean 95% CI 2.31 ROUGH 12 1.97250 0.38296 0.11055 (1.72918. 221582) 218 a. Locate a 95% confidence interval for the mean surface roughness of coated interior pipe on the accompanying Minitab printout. C (Type integers or a decimals.) 144 2.49 1.37 2.12 1.97 1.52 2.21
