Main content

## Statistics and probability

### Course: Statistics and probability > Unit 11

Lesson 3: Estimating a population mean- Introduction to t statistics
- Simulation showing value of t statistic
- Conditions for valid t intervals
- Reference: Conditions for inference on a mean
- Conditions for a t interval for a mean
- Example finding critical t value
- Finding the critical value t* for a desired confidence level
- Example constructing a t interval for a mean
- Calculating a t interval for a mean
- Confidence interval for a mean with paired data
- Making a t interval for paired data
- Interpreting a confidence interval for a mean
- Sample size for a given margin of error for a mean
- Sample size and margin of error in a confidence interval for a mean

© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

# Sample size and margin of error in a confidence interval for a mean

You might need: Calculator,Z table

## Problem

Stuck?

Stuck?