Khan Academy

Standard error of the mean (K-A)

Conditions for valid t intervals (K-A)

Confidence interval for a mean with paired data (K-A)

Example constructing a t interval for a mean (K-A)

Example finding critical t value (K-A)

Conditions for confidence intervals worked examples (K-A)

Conditions for valid confidence intervals (K-A)

Interpreting a confidence interval for a mean (K-A)

Confidence interval simulation (K-A)

Confidence interval example (K-A)

Introduction to t statistics (K-A)

Critical value (z*) for a given confidence level (K-A)

Making a t interval for paired data (K-A)

Confidence intervals and margin of error (K-A)

Small sample size confidence intervals (K-A)

Determining sample size based on confidence and margin of error (K-A)

Interpreting confidence level example (K-A)

Reference: Conditions for inference on a mean-link (K-A)

T-statistic confidence interval (K-A)

Interpreting confidence levels and confidence intervals (K-A)

Example constructing and interpreting a confidence interval for p (K-A)

Interpreting a z interval for a proportion (K-A)

Margin of error 1 (K-A)

Margin of error 2 (K-A)

Reference: Conditions for inference on a proportion-link (K-A)