The t-distribution is used for the critical value when estimating a population proportion when the standard deviation of the population is not known.

Name: The t-distribution is used for the critical value when estimating a population proportion when the standard deviation of the population is not known.
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Quizplus · Accepted Answer

The t-distribution is used for estimating a population mean, not a population proportion. For proportions, the normal distribution is typically used when the sample size is large enough.

The T-Distribution Is Used for the Critical Value When Estimating