The $t$ confidence interval formula for estimating $\mu$ is appropriate when the population being sampled is approximately normally distributed.

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The $t$ confidence interval formula assumes that the population being sampled is approximately normally distributed. If the population is not approximately normally distributed or if the sample size is small, alternative methods such as the Wilcoxon rank-sum test or the bootstrap method may be more appropriate.

The ttt Confidence Interval Formula for Estimating μ\muμ Is Appropriate When the Population Being Sampled Is Approximately Normally

The $t$ Confidence Interval Formula for Estimating $\mu$ Is Appropriate When the Population Being Sampled Is Approximately Normally