Eyestrain Is Thought to Be Associated with Different Types of Office

question 3

Essay

Eyestrain is thought to be associated with different types of office work.The Acme Temp-Help Company provides short-term employees to substitute for vacationing data entry personnel.Previous research has shown that approximately 21% of full time data entry personnel have eyestrain, and Acme would like to estimate the proportion, p , of their 6,000 part-time data entry employees that have eyestrain. a)They would like to estimate p to within 0.05 with 95% confidence.If they accept the starting value of 0.21 as a reasonable initial estimate of p , what sample size should they use for their study? b)Suppose Acme had felt that the working conditions of their temporary data entry personnel were different enough that they should not depend on the 0.21 as an initial estimate.In a few sentences, explain how your procedure for choosing a samples size would differ from your solution in part (a).(Do NOT recalculate a new estimate of the necessary sample size!)

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Definitions:

Enthalpy Reaction

A thermodynamic quantity equivalent to the total heat content of a system, representing the sum of its internal energy and the product of its pressure and volume, especially useful in the study of heat exchange in chemical reactions.

Electrochemical Reaction

A chemical reaction that involves the transfer of electrons from one species to another, often associated with electricity.

Exergonic

Describing a chemical reaction that releases energy to its surroundings, typically in the form of heat or work.

Endergonic

Endergonic refers to a chemical reaction where energy is absorbed from the surroundings, generally requiring an input of energy to proceed.