pandaman632
14.07.2020 •
Social Studies
In an industrial area where 300 industries are located, a survey has been conducted to study the extent of environmental pollution caused by the industries.75% of the industries were covered to collect the data. What is the Population and Sample size of the survey?
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Ответ:
population size is 225 and sample size is 20.
Explanation:
For studying the environmental pollution caused by industries, samples taken from 225 industries which is the 75 % of the industries. So the population size is 225. The sample size should be taken as much you want. More samples will be taken more accurate results will be gained. I take 20 samples, this number should be increased up to 100 samples. If sample size is 20 so 550 samples will be taken from 225 industries for determining the pollution caused by these industries..
Ответ:
Thank you very much for the free points!!!