How large a sample must be drawn so that a 99.8% confidence interval for u will have a margin of error equal to 3.97 Round the critical value to no less than three decimal places. Round the sample size up to the nearest Integer. is needed to be drawn in order to obtain a 99.8% confidence Interval A sample size of with a margin of error equal to 3.9. alle Part 2 of 2 (b) If the required confidence level were 95%, would the necessary sample size be larger or smaller? , because the confidence level is __ .
