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.

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Introduction to Statistics:
   • Introduction to Statistics  

Introduction to Probability:
   • Introduction to Probability, Basic Ov...  

Central Limit Theorem:
   • Central Limit Theorem - Sampling Dist...  

Standard Error of The Mean:
   • Standard Error of the Mean  

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Confidence Intervals & Margin of Error:
   • How To Find The Z Score, Confidence I...  

Find The Z-Score Given Confidence Interval:
   • How To Find The Z Score Given The Con...  

How To Calculate The Sample Size:
   • How To Calculate The Sample Size Give...  

Student's T-Distribution:
   • Student's T Distribution - Confidence...  

Confidence Interval-Population Proportion:
   • Finding The Confidence Interval of a ...  

Chebyshev's Theorem:
   • Chebyshev's Theorem  

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Hypothesis Testing - Null & Alternative:
   • Hypothesis Testing - Null and Alterna...  

Type I and Type II Errors:
   • How To Identify Type I and Type II Er...  

One Tailed and Two Tailed Tests:
   • One Tailed and Two Tailed Tests, Crit...  

Test Static For Means & Pop Proportions:
   • Test Statistic For Means and Populati...  

Hypothesis Testing Problems:
   • Hypothesis Testing Problems - Z Test ...  

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