Confidence Intervals are a fundamental concept in statistics which help estimate a population parameter from a sample statistic (or point estimate). They can be confusing and abstract, but this videos explores it through a story with a real world scenario, breaks down how to solve a simple explanation, and ends with a challenge to see if the mechanic really did test enough elevators. This video will cover building confidence intervals where the standard deviation is known, but variations where it is not known will be looked at in future videos. Subscribe to stay updated! Timestamps: 0:00 Setting up the problem 0:30 Confidence Intervals 1:00 Margin of Error 2:11 Calculating a simple Confidence Interval 2:36 So what does it all mean? 3:45 Challenge This video does build on some topics previously covered, and if you are unsure of any please check them out! Standard Deviation - Other Stats Videos which may be useful! P Values - #statistics #confidenceintervals #education #mathematics #normaldistribution