Examlex
In a random sample of 360 women,65% watched CBC News.In a random sample of 220 men,60% watched CBC News.Test the claim that the proportion of women who watch CBC News is higher than the proportion of men who watch CBC News.Use a significance level of 0.05.
Phosphate
A salt or ester of phosphoric acid, commonly used in fertilizers, detergents, food additives, and for water treatment.
Degradable Wastes
Wastes that can break down into less harmful components over time through biological processes.
Dissolved Oxygen
The amount of oxygen gas dissolved in water, essential for the respiration of aquatic life.
Sewage Treatment
A process of removing contaminants from wastewater, primarily from household sewage, to produce an effluent that is suitable for discharge or reuse.
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