Consider a Data Sample Consisting of 12 Values with a Mean

question 9

Multiple Choice

Consider a data sample consisting of 12 values with a mean of 22 and standard deviation of 1.5. What is the approximate 95% confidence interval for the standard deviation?

• A) 0.75 < σ < 4.32
• B) 0.87 < σ < 2.08
• C) 1.06 < σ < 2.55
• D) 1.03 < σ < 8.26

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Definitions:

Likert Scale

A psychometric scale commonly used in surveys to measure attitudes or opinions, where respondents indicate their level of agreement or disagreement with a series of statements on a linear scale.

Judges

Individuals appointed or elected to rule on legal matters and disputes in courts.

Five-Point Scale

A rating system that measures opinions, experiences, or responses using five distinct options typically ranging from very low to very high.

Cumulative

Describes something that increases or accumulates over time.