Applied Statistics (Entire Course) - Statistics - 11.1.2 Hypothesis Testing for 2 Sample Means (σ known) - 2-Tailed

In this video, we will be talking about hypothesis testing for the means of two samples. This video is a continuation of video 11.1.1, which covered one-tailed hypothesis testing for the difference of means. We will look at the scenario where we know the population standard deviation σ of the two samples, and we want to know whether the null hypothesis that the means of the two samples are equal is true. In other words, we're looking for a significance level at which we would say that the difference between the two means is due to chance and not something worth investigating further. 0:00 Intro 0:07 Example 1 Problem Statement 2:22 Check Conditions and State Hypotheses 2:40 Calculate Statistics 4:18 Draw Conclusion and Interpret Decision 4:54 Support with Confidence Interval 5:58 Setting Up Excel 8:19 Up Next Power Point: https://bellevueuniversity-my.sharepoint.com/:p:/g/personal/kbrehm_bellevue_edu/EaBMZaJSrJRJrs38F1XV57YBzqqvYG_IUEUD-ehNmdLz9A?e=STmLWz Confidence Interval Decision Tree: https://bellevueuniversity-my.sharepoint.com/:b:/g/personal/kbrehm_bellevue_edu/EbcsvXnQcsxAjGEmqReLNS4B-bxNVp6EzXRPrsFLxbaUSQ?e=ehmDq1 Hypothesis Testing Decision Tree: https://bellevueuniversity-my.sharepoint.com/:b:/g/personal/kbrehm_bellevue_edu/Ea6wo_3qR69HqiKzJBvsCY8Bn1HBDw8thED70zuAhU81CQ?e=IgbeO4 This playlist follows the text, Beginning Statistics, 3rd ed, Warren, Denley, Atchley Playlist: https://www.youtube.com/playlist?list=PLl-gb0E4MII1dkfGxmdt8YA0Dgabdvdmq