If the Significance Level Is Set at

question 5

Multiple Choice

If the significance level is set at .05, which of the following best reflects the probability of a chance finding?

• A) 1 in 20
• B) 1 in 5
• C) 1 in 10
• D) 1 in 15

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Definitions:

Population Variance

A measure of the dispersion of a set of data points in a population, indicating how much the members of the population differ from the mean value.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, expressed with a certain level of confidence.

Population Standard Deviation

A measure of the dispersion or spread of all members of a population from its mean value.

Interval Estimate

A range of values used to estimate a population parameter, typically expressed through confidence intervals.