# Question: Find the margin of error for estimating the population mean

Find the margin of error for estimating the population mean when the sample standard deviation equals 100 for a sample size of 400, using confidence level

(i) 95% and

(ii) 99%. What is the effect of the choice of confidence level?

(i) 95% and

(ii) 99%. What is the effect of the choice of confidence level?

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