Copier Paper Report

thickness_of_selected_sheets_of_paper.xls

Sheet1

Thickness of Selected Sheets of Paper

Thickness		You are a quality analyst with John and Sons Company. Your company manufactures fax machines, copiers, and printers that use plain paper. The CEO of the company wants the machines to handle 99.5 percent of all the paper that is used in them without the paper getting jammed. The CEO asks you to determine the thickness of paper that the machines must be able to handle to achieve this target. What are the appropriate confidence limits for the thickness of paper that the machines must be able to handle?
0.00358
0.00372		n =	24
0.00375		x-bar =	0.00411
0.00380		s =	0.0002899925
0.00381		α =	0.005
0.00385		t- score	3.1040
0.00391		Standard Error =	0.00006
0.00397		Margin of Error =	0.00018
0.00398		Lower Confidence Limit =	0.00393
0.00399		Upper Confidence Limit =	0.00429
0.00404
0.00407		The machine purchased must be such that it should be able to handle paper thicknesses in the range [0.00393, 0.00429].
0.00415
0.00418
0.00421
0.00422
0.00424
0.00425
0.00431
0.00434
0.00449
0.00449
0.00462
0.00467

0.00411	Mean, x-bar
0.0002899925	SD, s

	0.00358
	0.00467