Find Z-Score, Confidence Interval & Margin of Error 📊

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

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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

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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

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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

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Final Exams and Video Playlists:
https://www.video-tutor.net/

Full-Length Videos and Worksheets:
https://www.patreon.com/MathScienceTutor/collections