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Sampling techniques and procedures vary in accuracy,reliability,and cost from country to country.
Regular Exercise Program
A structured routine of physical activities designed and performed on a consistent basis with the aim of improving or maintaining physical fitness and overall health.
Two-sample Z-test
A statistical test used to determine whether there is a significant difference between the means of two groups.
Population Proportions
The fraction of individuals in a population having a particular property or characteristic.
Confidence Interval
A constellation of values, derived from the statistical inquiry of samples, assumed to cradle the value of an invisible population parameter.
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