Given p1p1 = 0.95, n1n1 = 419, p2p2 =0.97, n2n2 = 338. (You may find it useful to reference the appropriate table: z table or t table) a. Construct the 99% confidence interval for the difference between the population proportions. (Negative values should be indicated by a minus sign. Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.)

b. Is there a difference between the population proportions at the 1% significance level? multiple choice

• Yes, since the confidence interval includes the value 0.
• Yes, since the confidence interval does not include the value 0.
• No, since the confidence interval includes the value 0.
• No, since the confidence interval does not include the value 0.