A population has standard deviation a-17.4. Part 1 of 2 (a) How large a sample must be drawn so that a 99.8% confidence interval for μ will have a margin of error equal to 3.3? 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 with a margin of error equal to A sample size of 3.3. Part 2 of 2 (b) the required confidence level were 99.5%, would the necessary sample size be larger or smaller? (Choose one) , because the confidence level is (Choose one)

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