A Sample of Size N Is Selected at Random from a Population

question 21

Multiple Choice

A sample of size n is selected at random from a population that has mean  and standard deviation .The sample mean will be determined from the observations in the sample.Which of the following statements about the sample mean is/are TRUE?

• A)The mean of is the same as the population mean (i.e. ,  ).
• B)The variance of is .
• C)The standard deviation of decreases as the sample size grows larger.
• D)All of the above are true.
• E)Only A and B are true.

---

Definitions:

Work Process

The series of actions or steps taken in order to achieve a particular end in a professional environment.

Planning

The process of setting goals, defining strategies, and outlining tasks and schedules to achieve the desired results.

Means-Ends

An analysis or approach that focuses on identifying the means to achieve a desired end or goal.

Coordinated

Actions or efforts that are managed in such a way as to ensure efficiency and harmony in achieving a goal.