# MATH 1401: Elementary Statistics (Minitab and Excel)

## Videos

T intervals (Confidence Intervals when the Population Standard Deviation is Unknown)

This sub-module will build on what you learn in z-intervals. The most important point of this lesson is showing how to make confidence intervals when the population standard deviation is unknown.

• Video for Introduction of Confidence Intervals - No Population Standard Deviation
• Video for Example 1 for T-interval with Sample Data
• Video for Example 2 for T-interval with Sample Statistics
• Video for Flow Chart for One Mean T-interval
• Video for Practice Problem 1 for T-interval with Sample Statistics
• Video for Practice Problem 2 for T-interval with Sample Data
• Video for One Mean T-interval with Excel
• PowerPoint for One Mean T-interval
• Flow Chart for One Mean T-interval
• PowerPoint for Confidence Interval (T-intervals) for Excel

Video Title
Introduction of Confidence Intervals - No Population Standard Deviation
Example 1 for T-interval with Sample Data
Example 2 for T-interval with Sample Statistics
Flow Chart for One Mean T-interval
Practice Problem 1 for T-interval with Sample Statistics
Practice Problem 2 for T-interval with Sample Data
One Mean T-interval Using Excel