How To Find The Z Score, Confidence Interval, and Margin of Error for a Population Mean

This statistics video tutorial explains how to find the z-score that will be used to find the confidence interval and margin of error for a population mean. This video contains 2 example problems in which you're asked to find a 90% and 95% confidence interval given the population standard deviation, sample mean, and sample size. By the way, the margin of error is also known as the error bound. This video also explains the difference between the confidence interval and the confidence level. It also discusses the meaning of the greek symbol alpha as it is used in this context. Statistics - Video Lessons: https://www.video-tutor.net/statistic.html __________________________________ Introduction to Statistics: https://www.youtube.com/watch?v=XZo4xyJXCak Introduction to Probability: https://www.youtube.com/watch?v=SkidyDQuupA Central Limit Theorem: https://www.youtube.com/watch?v=4YLtvNeRIrg Standard Error of The Mean: https://www.youtube.com/watch?v=UuHqq09nTAk _____________________________________ Confidence Intervals & Margin of Error: https://www.youtube.com/watch?v=DT-fPG0Hff8 Find The Z-Score Given Confidence Interval: https://www.youtube.com/watch?v=sJyZ9vRhP7o How To Calculate The Sample Size: https://www.youtube.com/watch?v=nkkxu09K3ZA Student's T-Distribution: https://www.youtube.com/watch?v=MUD390jtgQs Confidence Interval-Population Proportion: https://www.youtube.com/watch?v=_aQTgv_OOSU Chebyshev's Theorem: https://www.youtube.com/watch?v=ZXq0ygaZuwg _____________________________________ Hypothesis Testing - Null & Alternative: https://www.youtube.com/watch?v=wiYJWyfdGg4 Type I and Type II Errors: https://www.youtube.com/watch?v=9yQm9F2_yIk One Tailed and Two Tailed Tests: https://www.youtube.com/watch?v=XHPIEp-3yC0 Test Static For Means & Pop Proportions: https://www.youtube.com/watch?v=Hag0GW9B6EY Hypothesis Testing Problems: https://www.youtube.com/watch?v=zJ8e_wAWUzE ____________________________________ Final Exams and Video Playlists: https://www.video-tutor.net/ Full-Length Videos and Worksheets: https://www.patreon.com/MathScienceTutor/collections