History Bookmarks Window Help Megan Metcalf 3/7/18 11:22 PM Elementary Statistic
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History Bookmarks Window Help Megan Metcalf 3/7/18 11:22 PM Elementary Statistical Methods - MATH-1342-335 Homework: Section 8.3 Homework Score: 0 of 1 pt Instructor-created question Save 6of10(3complete) Score: 10%, 1 of 10 pts Question Help Oil fold pipes are intemally coated in order to provent cormosion. Reseanchers at a university investigated the infuence that coating may have on the suface roughness of oll field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 8 sections of coated interior pipe. The data (n micrometers) are shown in the table to the right. Complete parts a and b 1.73 249 225 144 118 212 2.16 195 a.Locate a 95% onfidenoe rterval for to mean rface roughess of coated itenor ppe o the accompanying Minitab prinout .(Type integers or a decimals.) b. Would you expect the average surface roughness to be as high as 2.5 micrometers? Explain A. Yes, because we oan be 96% corddent that he mean surface roughnes, les behanen he lower and upper band·of~rin. ind 2Sle1 OB. Yes, because we can be 95% confdent that the mean suface roughness les out.de-iwer and upper bonds ofthe nerv-and 25 les oede he OC. No. because we oan be 95% confident that the mean surface roupressies between the lower ard upper bonds or re nervai, and 25tes otsoe the D. Ye6, because we can be 95% oor dent that the mean sutece rourness ies outside he ower ad mer bonds of the mena, and 2set win, the Click to select your ansveris) and then click Check Answer All parts showing Clear All ab Chegg tutors who ca right nowExplanation / Answer
History Bookmarks Window Help Megan Metcalf 3/7/18 11:22 PM Elementary Statistical Methods - MATH-1342-335 Homework: Section 8.3 Homework Score: 0 of 1 pt Instructor-created question Save 6of10(3complete) Score: 10%, 1 of 10 pts Question Help Oil fold pipes are intemally coated in order to provent cormosion. Reseanchers at a university investigated the infuence that coating may have on the suface roughness of oll field pipes. A scanning probe instrument was used to measure the surface roughness of each section in a sample of 8 sections of coated interior pipe. The data (n micrometers) are shown in the table to the right. Complete parts a and b 1.73 249 225 144 118 212 2.16 195 a.Locate a 95% onfidenoe rterval for to mean rface roughess of coated itenor ppe o the accompanying Minitab prinout .(Type integers or a decimals.) b. Would you expect the average surface roughness to be as high as 2.5 micrometers? Explain A. Yes, because we oan be 96% corddent that he mean surface roughnes, les behanen he lower and upper band·of~rin. ind 2Sle1 OB. Yes, because we can be 95% confdent that the mean suface roughness les out.de-iwer and upper bonds ofthe nerv-and 25 les oede he OC. No. because we oan be 95% confident that the mean surface roupressies between the lower ard upper bonds or re nervai, and 25tes otsoe the D. Ye6, because we can be 95% oor dent that the mean sutece rourness ies outside he ower ad mer bonds of the mena, and 2set win, the Click to select your ansveris) and then click Check Answer All parts showing Clear All ab Chegg tutors who ca right now
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