Finding and interpreting a confidence interval for a population mean (σ unknown)

Howdy! I’m Professor Curtis of Aspire Mountain Academy here with more statistics homework help. Today we’re going to learn how to find and interpret a confidence interval for a population mean when the population standard deviation is unknown. Here’s our problem statement: A clinical trial was conducted to test the Continue Reading

Confidence Intervals for One Mean: Sigma Not Known (t Method)

Let’s look into confidence intervals for the population mean mu using the t procedure. I am going to assume that you’ve already been introduced to the notion of confidence intervals for the population mean. And I look at that introduction in other videos. For the methods used in this video Continue Reading

Confidence Intervals: Crash Course Statistics #20

Hi, I’m Adriene Hill, and Welcome back to Crash Course Statistics. Last week I ordered a pair of gold lame pants with DFTBAQ embroidered on them. The delivery guy said they could come by the next day at exactly 11am on the dot! Just kidding. That never happens. Instead of Continue Reading

How to find a confidence interval with a t distribution

This is Stephanie from StatisticsHowTo.com and in this video I will show how to construct a confidence interval with a t-distribution. I have a sample problem here. We are being asked to construct a 98% confidence interval based on a set of data. This is the formula we are going Continue Reading