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A Work Sampling Study Is Needed That Will Estimate the Percentage

question 61

Essay

A work sampling study is needed that will estimate the percentage of time a postal clerk spends selling stamps as opposed to other duties. Determine the necessary sample size to estimate that proportion with a confidence of 99.74 percent to within 3 percent, for these cases:
(1) No information is currently available concerning that proportion.
(2) The proportion is probably no more than 15 percent.


Definitions:

Coniferous Forests

are dense, evergreen forests found in regions with long winters and short summers, primarily comprised of cone-bearing trees.

Timber Harvesting

The process of cutting down trees to obtain wood for various uses, including construction, paper products, and energy, often with implications for environmental management and sustainability.

Urban Development

Refers to the process and strategies involved in growing and improving cities through construction, expansion, and revitalization.

Agriculture

The science, art, and practice of cultivating plants and livestock.

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