Which table should be used to determine a confidence interval on the mean when standard deviation is NOT known and the sample size is 10?

Question

Quizplus · Accepted Answer

When the standard deviation is not known and the sample size is less than 30, the t-table should be used to determine the confidence interval on the mean. The t-distribution takes into account the larger variability that can occur in smaller samples. With a sample size of 10, the t-distribution is a more appropriate choice than the z-table. The F-table is used for hypothesis testing when comparing variances between two populations, and the Chi-Square table is used for hypothesis testing when comparing distributions or performing goodness of fit tests.

Which Table Should Be Used to Determine a Confidence Interval