A Sample of 13 College Professors Has a Mean Age

question 4

Essay

A sample of 13 college professors has a mean age of 30 years and a standard deviation of 5 years.Suppose that the sample is enlarged to 15 college professors,by including two additional professors that are each 30 years old.Will the standard deviation increase,decrease,or stay the same,and why?

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Definitions:

Final Month

The last month in a given period, often used to describe the concluding phase of specific events or timelines.

Approximately a Decade

A term used to indicate a rough period of ten years, used when exact timeframes are uncertain or unnecessary to specify.

Frail Elderly

Older adults who are physically weak, vulnerable, and often have multiple health issues, making them susceptible to adverse outcomes like falls or acute illness.

Cognitively Impaired

Describes individuals experiencing difficulty with mental tasks related to thinking, problem-solving, attention, memory, and learning.