Which of the Following Is a Requirement for a Random

question 4

Multiple Choice

Which of the following is a requirement for a random sample?

• A)Every individual has an equal chance of being selected.
• B)The probabilities cannot change during a series of selections.
• C)There must be sampling with replacement.
• D)All of the other 3 choices are correct.

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Definitions:

Standard Error

A statistic that measures the dispersion or variability of a sampling distribution, often used in estimating parameters.

Confidence Interval

A range of values that is used to estimate the true value of a population parameter with a certain level of confidence.

Population Standard Deviation

A measure of the dispersion of a set of data from its mean, calculated for the entire population.

Confidence Interval

A statistical range, with a given probability, that contains the true parameter of the population.