To Compute a 95 Percent Confidence Interval for σ²,we Use

question 75

True/False

To compute a 95 percent confidence interval for σ²,we use n − 1 degrees of freedom and the chi-square points on the distribution curve of χ²_α/2 and of χ²_1−(α/2).

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Definitions:

Sampling Distribution

The probability distribution of a statistic based on a random sample.

Statistical Inferences

The process of drawing conclusions about population parameters based on a sample.

Probability

The likelihood or chance of an event occurring, expressed as a number between 0 and 1.

Parameter Data

Data or values that define or control the behavior of a mathematical function or system.