Can someone subscribe to my teacher she works to hard also because I need the As?FREEE

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

Pls brainliest will be awarded if answer is correct