Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 110, with a sample size of (i) 324 and (ii) 1764. What is the effect of the sample size? (i) Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 110 with a sample size of 324. (Round to two decimal places as needed.)
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df = 324 - 1 = 323 Using a t-table or calculator, the critical value for a 95% confidence interval with 323 degrees of freedom is approximately 1.96. Show more…
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