Question: How do you solve a problem like the one below? I need an explanation, not just the answer. A researcher wants to estimate the proportion

How do you solve a problem like the one below? I need an explanation, not just the answer.

A researcher wants to estimate the proportion of students who cheat on exams. A survey of 490 college students showed that 33% of them cheated on examinations. Find the margin of error for the 95% confidence interval.

I have read over the study material and nothing is making any sense to me.

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