You may need to use the appropriate appendix table or technology to answer this question. Sheer industries is considering a new computer-assisted program to train maintenance employees to do machine repairs. In order to fully evaluate the program, the director of manufacturing requested an estimate of the population mean time required for maintenance employees to complete the computer assisted training. Use 7.94 days as a planning value for the population standard deviation. (Round your answers up to the nearest whole number.) (a) Assuming 95% confidence, what sample size would be required to obtain a margin of error of 0.5 days? (b) If the precision statement was made with 90% confidence, what sample size would be required to obtain. margin of error of 2 days?
You may need to use the appropriate appendix table or technology to answer this question. Sheer industries is considering a new computer-assisted program to train maintenance employees to do machine repairs. In order to fully evaluate the program, the director of manufacturing requested an estimate of the population mean time required for maintenance employees to complete the computer assisted training. Use 7.94 days as a planning value for the population standard deviation. (Round your answers up to the nearest whole number.) (a) Assuming 95% confidence, what sample size would be required to obtain a margin of error of 0.5 days? (b) If the precision statement was made with 90% confidence, what sample size would be required to obtain. margin of error of 2 days?
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.2: Representing Data
Problem 22PFA
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Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question.
Sheer industries is considering a new computer-assisted program to train maintenance employees to do machine repairs. In order to fully evaluate the program, the director of manufacturing
requested an estimate of the population mean time required for maintenance employees to complete the computer assisted training. Use 7.94 days as a planning value for the population standard
deviation. (Round your answers up to the nearest whole number.)
(a) Assuming 95% confidence, what sample size would be required to obtain a margin of error of 0.5 days?
(b) If the precision statement was made with 90% confidence, what sample size would be required to obtain a margin of error of 2 days?
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