Health Insurers and the Federal Government Are Both Putting Pressure

question 12

Multiple Choice

Health insurers and the federal government are both putting pressure on hospitals to shorten the average length of stay (LOS) of their patients.In 1996,the average LOS for non-heart patient was 4.6 days.A random sample of 20 hospitals in one state had a mean LOS for non-heart patients in 2000 of 3.8 days and a standard deviation of 1.2 days.How large a sample of hospitals would we need to be 99% confident that the sample mean is within 0.5 days of the population mean?

• A)3
• B)7
• C)32
• D)48
• E)96

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Definitions:

Cult of Domesticity

A prevailing value system among the upper and middle classes during the 19th century in the United States and Britain that emphasized the virtues of women in their roles as mothers and housewives.

Marquis de Lafayette

A French aristocrat and military officer who played a significant role in the American Revolution by aiding the Thirteen Colonies in their quest for independence from Britain.

American Independence

The historical event achieved in 1776 when the Thirteen Colonies successfully declared their independence from British rule, marked formally by the Declaration of Independence.