Calculate Sample Size Interval of A Population Mean

How to calculate the sample size. Includes discussion and visualization of how sample sizes changes when standard deviation, margin of error changes too.
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[@merptisai621]

Thank you very much for walking through the problem. I find your method of explanation by walking through a problem very helpful for my understanding. Please keep making these types of videos. I have subscribed to your channel

[@rezakhani902]

you are great!!! the best

[@ashoklodhi1910]

Thanks for the video....to calculate Sample size we need to have Margin of Error however again to calculate Margin of Error we need to have Sample Size so they are interdependent.....how this can be done...

[@StevenKR]

I'm very confused. I try it with E = 10, making Z = 1.28, and standard dev = 6.654 and I get an n=.7...
So my needed sample size is 1?