An industrial engineer collected data on the labor time required to produce an order of automobile mufflers using a heavy stamping machine. The data on times (hours) for n = 52 orders of different parts 2.15, 2.27, 0.99, 0.63, 2.45, 1.30, 2.63, 2.20, 0.99, 1.00, 1.05, 3.44, 0.49, 0.93, 2.52, 1.05, 1.39, 1.22, 3.17, 0.85, 1.18, 2.27, 1.52, 0.48, 1.33, 4.20, 1.37, 2.70, 0.63, 1.13, 3.81, 0.20, 1.08, 2.92, 2.87, 2.62, 1.03, 2.76, 0.97, 0.78, 4.68, 5.20, 1.90, 0.55, 1.00, 2.95, 0.45, 0.70, 2.43, 3.65, 4.55, 0.33, has 2424 39331 25 151 i=1 i=1 Assume that the population is normal. (a) What can one assert with 95% confidence about the maximum error if ē is used as a point estimate of the true population mean labor time required to run the heavy stamping machine? Construct a 95% confidence interval for the true population mean labor time. (b) Conduct a test of hypotheses with the intent of showing that the mean labor time is more than 1.5 hours at a = 0.05 significant level. What error could you have made? Explain in the context of the problem.

An industrial engineer collected data on the labor time required to produce an order of automobile mufflers using a heavy stamping machine. The data on times (hours) for n = 52 orders of different parts 2.15, 2.27, 0.99, 0.63, 2.45, 1.30, 2.63, 2.20, 0.99, 1.00, 1.05, 3.44, 0.49, 0.93, 2.52, 1.05, 1.39, 1.22, 3.17, 0.85, 1.18, 2.27, 1.52, 0.48, 1.33, 4.20, 1.37, 2.70, 0.63, 1.13, 3.81, 0.20, 1.08, 2.92, 2.87, 2.62, 1.03, 2.76, 0.97, 0.78, 4.68, 5.20, 1.90, 0.55, 1.00, 2.95, 0.45, 0.70, 2.43, 3.65, 4.55, 0.33, has 2424 39331 25 151 i=1 i=1 Assume that the population is normal. (a) What can one assert with 95% confidence about the maximum error if ē is used as a point estimate of the true population mean labor time required to run the heavy stamping machine? Construct a 95% confidence interval for the true population mean labor time. (b) Conduct a test of hypotheses with the intent of showing that the mean labor time is more than 1.5 hours at a = 0.05 significant level. What error could you have made? Explain in the context of the problem.

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Description: An industrial engineer collected data on the labor time required to produce anorder of automobile mufflers using a heavy stamping machine. The data on times (hours)for n = 52 orders of different parts2.15,2.27,0.99,0.63,2.45,1.30,2.63,2.20,0.99,1.00

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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