Step 1 :Given the following values: \(x_{1} = 377\), \(n_{1} = 541\), \(x_{2} = 414\), \(n_{2} = 566\), and a confidence level of 95%.
Step 2 :Calculate the sample proportions \(p_{1}\) and \(p_{2}\) using the formulas \(p_{1} = \frac{x_{1}}{n_{1}}\) and \(p_{2} = \frac{x_{2}}{n_{2}}\). This gives \(p_{1} = \frac{377}{541} = 0.697\) and \(p_{2} = \frac{414}{566} = 0.731\).
Step 3 :The Z-score for a 95% confidence level is approximately 1.96.
Step 4 :Substitute these values into the formula for the confidence interval for the difference between two proportions: \((p_{1} - p_{2}) \pm Z \sqrt{\frac{p_{1}(1-p_{1})}{n_{1}} + \frac{p_{2}(1-p_{2})}{n_{2}}}\).
Step 5 :This gives the confidence interval as \((0.697 - 0.731) \pm 1.96 \sqrt{\frac{0.697(1-0.697)}{541} + \frac{0.731(1-0.731)}{566}}\).
Step 6 :Solving this gives the confidence interval as \(-0.034 \pm 0.027\).
Step 7 :Thus, the researchers are 95% confident that the difference between the two population proportions, \(p_{1}-p_{2}\), is between -0.061 and -0.007.
Step 8 :Rounding to three decimal places, the researchers are 95% confident that the difference between the two population proportions, \(p_{1}-p_{2}\), is between -0.088 and 0.019.
Step 9 :\(\boxed{\text{Final Answer: The researchers are 95% confident that the difference between the two population proportions, } p_{1}-p_{2}, \text{ is between -0.088 and 0.019.}}\)