A manager evaluates effectiveness of a major hardware upgrade by running a certain process 50 timesbefore the upgrade and 50 times after it. Based on these data, the average running time is 8.5 minutesbefore the upgrade, 7.2 minutes after it. Historically, the standard deviation has been 1.8 minutes, andpresumably it has not changed. Construct a 90% confidence interval showing how much the mean runningtime reduced due to the hardware upgrade.

The provided information is x¯B=8.5 x¯A=7.2σ=1.8n=50α=0.10Then the critical value is zc=1.64…

Answered: A manager evaluates effectiveness of a…

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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