A sample of size n = 52 is drawn from a population whose standard deviation is ? = 38. Part 1 of 2 (a) Find the margin of error for a 95% confidence interval for ?. Round the answer to at least three decimal places. The margin of error for a 95% confidence interval for ? is ____. Part 2 of 2 (b) If the sample size were n = 75, would the margin of error be larger or smaller? (Choose one) , because the sample size is (Choose one).
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This value can be found using a standard normal distribution table or a calculator. The critical value for a 95% confidence interval is 1.96. Show more…
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