rate of 78.3 beats per minute (bpm) with a significance level, do the data provide sufficient evidence to conclude that the mean post-work heart rate for casting workers exceeds the normal resting heart rate of 72 bpm? You may assume that the conditions for normality are satisfied.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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1. A 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. A random sample of 29 casting workers had a mean post-work heart
rate of 78.3 beats per minute (bpm) with a standard deviation of 11.2 bpm. At the 5%
significance level, do the data provide sufficient evidence to conclude that the mean post-work
heart rate for casting workers exceeds the normal resting heart rate of 72 bpm? You may assume
that the conditions for normality are satisfied.
Transcribed Image Text:1. A 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. A random sample of 29 casting workers had a mean post-work heart rate of 78.3 beats per minute (bpm) with a standard deviation of 11.2 bpm. At the 5% significance level, do the data provide sufficient evidence to conclude that the mean post-work heart rate for casting workers exceeds the normal resting heart rate of 72 bpm? You may assume that the conditions for normality are satisfied.
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