THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 108

Essay

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
The mean household income,in dollars,must be estimated for a town that is divided into three districts.The relevant information is shown in the table.

A 95% confidence interval for the population mean that extends $550 on each side of the sample estimate is required.
-Determine how many sample observations are needed under the proportional allocation scheme.

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Definitions:

Unpredictable

Not able to be predicted or foreseen, often implying a level of uncertainty or changeability.

Controllable

Capable of being managed, directed, or regulated by actions or interventions.

Stress

A physical, mental, or emotional response to external or internal stimuli that require adjustment or adaptation.

Secondary Appraisal

The process of evaluating one's ability to cope with or manage the consequences of a stressful event after initially recognizing it as a threat or challenge.