Suppose a Department Store Wants to Estimate the Mean Age

question 76

Short Answer

Suppose a department store wants to estimate the mean age of the customers of its contemporary apparel department,correct to within 2 years,with level of confidence equal to 95%.Management believes that the standard deviation is 8 years.The sample size they should take is .

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Definitions:

Ergonomic Hazard

Risks of physical strain and injury related to the design and use of equipment, workplace layout, and work processes.

Chemical Hazard

Any chemical substance that can cause harm to individuals or the environment when it is released or during its use.

Physical Hazard

Any factor within the environment that can potentially cause harm or adverse health effects to individuals.

Reactive Substances

Materials that undergo a chemical change when exposed to certain conditions, often used in industrial processes.