One sample z-test

https://www.youtube.com/watch?v=BWJRsY-G8u0

 

Statistics 101: single sample hypothesis z-test concepts

https://www.youtube.com/watch?v=HoqzIR8xj4s

 

How to run a two-sample z test in Excel 2013

https://www.youtube.com/watch?v=9F_Dx_kcKtM

 

Z scores – statistics

https://www.youtube.com/watch?v=NY2zWGBXBhU

 

Z tests for one mean: the rejection region approach

https://www.youtube.com/watch?v=60x86lYtWI4

 

Type I and Type II errors

https://www.youtube.com/watch?v=FHT6e_mdGoU

 

Statistics 101: visualizing Type I and Type II error

https://www.youtube.com/watch?v=k80pME7mWRM

 

Learning to understand Hypothesis testing for Type I and Type II error

https://www.youtube.com/watch?v=iz1sfne1cNA