If a Researcher Changes from the 90% Confidence Level to the 95

question 17

Multiple Choice

If a researcher changes from the 90% confidence level to the 95% level, the confidence interval will________.

• A) widen.
• B) decrease in width.
• C) not be affected.
• D) widen only if N is greater than 100.

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Definitions:

Assumption of Normality

The presumption that the data being analyzed is drawn from a normally distributed population, which is a common requirement for many statistical tests.

Distribution Shape

Describes the overall appearance of the data's frequency distribution, including characteristics like symmetry, skewness, and kurtosis.

Descriptive Statistics

Statistics that summarize, describe, and analyze a set of data, providing insights into its central tendency, variability, and distribution.

Assumption of Normality

The presumption that the data in a dataset is normally distributed, which is a common precondition for many statistical tests.