The video introduces confidence intervals, focusing on comparing two sample means with unknown variances. It uses the analogy of comparing apples and oranges to explain the concept. The confidence interval formula is presented, highlighting the challenge of estimating degrees of freedom. The video concludes by stating that no example will be provided and hints at future topics like hypothesis testing.

Describe the formula used for calculating confidence intervals for two sample means.

Why is it unlikely that one will remember the formula for confidence intervals?