A Medical Records Manager Would Like to Review Hospital Records $\text { σ }$

question 3

Short Answer

A medical records manager would like to review hospital records in order to determine the average hospital stay for surgery patients during the past year.What sample size must be taken in order to be 95% confident that the estimate is within 1 day of the true mean? She has past studies,which indicate that $\text { σ }$
is 20.25 days.

---

Definitions:

Subjective Feelings

Personal experiences of emotions that are unique to an individual and may not be directly observable or measurable by others.

Money

A medium of exchange, unit of account, and store of value, used to facilitate transactions and measure economic value.

Happiness

A mental or emotional state of well-being characterized by positive emotions ranging from contentment to intense joy.

Physiological Component

Aspects of psychological experiences that are tied to the functions and responses of the body, such as heart rate or hormone levels.