Page 31 - THE 14th GRADUATE INTEGRITY : GI14

'JHVSFǰ Top view of tank
source: researcher (2566)

We found passive design of aforementioned building help in promotion of clearing chlorine vapor.

Despite of wind promotion, chlorine vapor may still attack worker health. Researcher wish to define if
chlorine vapor in this building cause health problem.
Fortunately, there is no adjacent building that may effected from chlorine spreading.

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ǰ ǰ All patient were performed chest x-ray and measured cardiothoracic ratio(CT ratio) and descending
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branch of right pulmonary arteries. Certified radiologist measured and recorded the means of data.
Diameter of descending branch of right pulmonary artery may refer to pulmonary hypertension if diameter

is higher than 1.6 centimeter.
After data gathering, raw data would be analysed with statistical technique with SPSS software.
Using the t-test for analysis of means of each recorded data with 95% confidence interval were calculated.

The analysis determined the statistically significant variables (p<0.05) to model the probability of a
relationship between each data.
Sample size
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Using Cohen's(1992) Interpreting for effect size value , we chose the medium effect size r=0.3,
then calculated sample size with Type I acceptable error(ɲ) = 0.05 and Type II acceptable error(ɴ) = 0.2
H0: Rho=r0 = 0(Correlation coefficient)

H1: Rho=r1 = 0.3(Expected correlation coefficient - medium size)
n= sample size

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