Question: When taking a random sample from a very large population, how does the standard error of the mean change when 1./ the sample size is

When taking a random sample from a very large population, how does the standard error of the mean change when 1./ the sample size is increased from 100 to 1,600?

2./ the sample size is decreased from 300 to 150?

3./ the sample size is multiplied by 4?

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