### 9.20 Worker FatigueA study by M. Chen et al. titled “Heat Stress Evaluation and Worker Fatigue in a Steel Plant” (American Industrial Hygiene Association, Vol. 64, pp. 352–359) assessed fatigue in steel plant workers due to heat stress. Among other things, the researchers monitored the heart rates of a random sample of 29 casting workers. A hypothesis test is to be conducted to decide whether the mean post-work heart rate of casting workers exceeds the normal resting heart rate of 72 beats per minute (bpm). **Hypothesis Test**1. **Determine the null hypothesis.**2. **Determine the alternative hypothesis.**3. **Classify the hypothesis test as two-tailed, left-tailed, or right-tailed.**

The population mean is, μ=72 beats per minute Claim: The mean post work heart rate of casting…

Answered: 9.20 Worker Fatigue. A study by M.…

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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