8)A team of designers was given the task of reducing the defect rate in the manufacture of a certain printed circuit board. The team decided to reconfigure the cooling system. A total of 971 boards were produced the week before the reconfiguration was implemented, and 253 of these were defective. A total of 845 boards were produced the week after reconfiguration, and 190 of these were defective. (a) Construct a 98% confidence interval for the decrease in the defective rate after the reconfiguration. Round the answers to three decimal places (b) A quality control engineer claims that the reconfiguration has decreased the proportion of defective parts by more than 0.18. Does the confidence interval contradict this claim?

8)A team of designers was given the task of reducing the defect rate in the manufacture of a certain printed circuit board. The team decided to reconfigure the cooling system. A total of 971 boards were produced the week before the reconfiguration was implemented, and 253 of these were defective. A total of 845 boards were produced the week after reconfiguration, and 190 of these were defective. (a) Construct a 98% confidence interval for the decrease in the defective rate after the reconfiguration. Round the answers to three decimal places (b) A quality control engineer claims that the reconfiguration has decreased the proportion of defective parts by more than 0.18. Does the confidence interval contradict this claim?

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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