Resolved: Sample Standard Error

in Statistics / Population variance known, z-score

In 4.2.+Population+variance+known,+z-score_exercise the solution to Standard Error uses the population standard deviation to calculate it. Isn't the standard error calculated with the sample's standard deviation?
Can you please clarify?

1 answers ( 1 marked as helpful)

Ned Krastev

Instructor

Posted on:

05 Jan 2023

Hi Wilson,
Please note that In this case, we know the population standard deviation. This is why we can use it.
Best,
Ned

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