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Efficient manufacturing: Efficiency experts study the processes. used to manufacture items in order to make them as efficien= as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 75 clamps, the mean time to complete this step was 50.1 seconds. Assume that the population standard deviation G= 10 seconds. a) Construct a 95.1 confidence interval for the mean. time needed to complete this step. b) Find the Sample size needed so that a 98.1' confidence interval will have margin of error of 1.5

Efficient manufacturing: Efficiency experts study the processes. used to manufacture items in order to make them as efficien= as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 75 clamps, the mean time to complete this step was 50.1 seconds. Assume that the population standard deviation G= 10 seconds. a) Construct a 95.1 confidence interval for the mean. time needed to complete this step. b) Find the Sample size needed so that a 98.1' confidence interval will have margin of error of 1.5

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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**Week 4 Discussion** **Efficient Manufacturing:** Efficiency experts study the processes used to manufacture items in order to make them as efficient as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 75 clamps, the mean time to complete this step was 50.1 seconds. Assume that the population standard deviation σ = 10 seconds. a) Construct a 95% confidence interval for the mean time needed to complete this step. b) Find the sample size needed so that a 98% confidence interval will have a margin of error of 1.5.
Transcribed Image Text:**Week 4 Discussion** **Efficient Manufacturing:** Efficiency experts study the processes used to manufacture items in order to make them as efficient as possible. One of the steps used to manufacture a metal clamp involves the drilling of three holes. In a sample of 75 clamps, the mean time to complete this step was 50.1 seconds. Assume that the population standard deviation σ = 10 seconds. a) Construct a 95% confidence interval for the mean time needed to complete this step. b) Find the sample size needed so that a 98% confidence interval will have a margin of error of 1.5.
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