The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new electronic component. Assume that the population standard deviation of this assembly time is 3.6 minutes. After observing 120 workers assembling similar devices, the manager noticed that their average time was 16.2 minutes. Construct a 92% confidence interval for the mean assembly time. Based on the CI in part (a), fill in the following quantities: Point Estimate Standard Error Margin of Error How many workers should be involved in this study in order to have the mean assembly time estimated up to 15 seconds with 92% confidence?
The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new electronic component. Assume that the population standard deviation of this assembly time is 3.6 minutes. After observing 120 workers assembling similar devices, the manager noticed that their average time was 16.2 minutes. Construct a 92% confidence interval for the mean assembly time. Based on the CI in part (a), fill in the following quantities: Point Estimate Standard Error Margin of Error How many workers should be involved in this study in order to have the mean assembly time estimated up to 15 seconds with 92% confidence?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Transcribed Image Text:The operations manager of a large production plant would like to estimate the mean amount of
time a worker takes to assemble a new electronic component. Assume that the population standard deviation
of this assembly time is 3.6 minutes. After observing 120 workers assembling similar devices, the manager
noticed that their average time was 16.2 minutes.
Construct a 92% confidence interval for the mean assembly time.
Based on the CI in part (a), fill in the following quantities:
Point Estimate
Standard Error
Margin of Error
How many workers should be involved in this study in order to have the mean assembly time
estimated up to 15 seconds with 92% confidence?
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