Use the Two-Proportions Z-Interval Procedure to Obtain the Required Confidence

Multiple Choice

Use the two-proportions z-interval procedure to obtain the required confidence interval for the difference between twopopulation proportions. Assume that independent simple random samples have been selected from the two populations.
-In a random sample of 45 Democrats from one city, 10 approved of the mayor's performance. In a random sample of 49 Republicans from the city, 24 approved of the mayor's performance. Find a
90% confidence interval for the difference between the proportions of Democrats and Republicans
Who approve of the mayor's performance.

A) -0.423 to -0.112
B) 0.037 to 0.408
C) 0.035 to 0.408
D) 0.065 to 0.379