The County Clerk Wants to Estimate the Proportion of Retired

question 154

Short Answer

The county clerk wants to estimate the proportion of retired voters who will need special election facilities. The clerk wants to find a 95% confidence interval for the population proportion which extends at most 0.07 to either side of the sample proportion. How large a sample must be taken to assure these conditions are met?

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Definitions:

Job-Application Letter

A formal letter sent to an employer along with a resume detailing the applicant's credentials and interest in an open position.

Professional Brand

The marketable image or identity built around an individual's skills, expertise, and career goals.

Passive Applicant

An individual who is not actively seeking a new job but is open to discussing potential job opportunities.

Chronological Résumé

A type of résumé that lists a person’s work history in chronological order, starting with the most recent position.