The t distribution allows the calculation of confidence intervals for means when the actual standard deviation is not known.

Name: The t distribution allows the calculation of confidence intervals for means when the actual standard deviation is not known.
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Quizplus · Accepted Answer

The t distribution is specifically used when the population standard deviation is unknown and the sample size is small (less than 30). It allows for the calculation of confidence intervals for means based on the sample statistics.

The T Distribution Allows the Calculation of Confidence Intervals for Means