The Personnel Department of a Large Corporation Wants to Estimate

question 45

Short Answer

The personnel department of a large corporation wants to estimate the family dental expenses of its employees to determine the feasibility of providing a dental insurance plan. A random sample of six employees reveals the following family dental expenses: $180, $260, $60, $40, $100, and $80. It is known that dental expenses follow a normal distribution. Construct a 90% confidence interval for the average family dental expenses for all employees of this corporation.

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Definitions:

Elizabeth Cady Stanton

A leading figure in the early women's rights movement, known for her advocacy for women's suffrage, women's rights, and abolition of slavery.

Equivocate

To use ambiguous language so as to conceal the truth or avoid committing oneself to a concrete stance.

Retreat

A period of seclusion, often for meditation, prayer, or study, away from one's normal environment.

Hypocritical

Characterized by behavior that contradicts stated beliefs or feelings, often involving pretense or deception.