In a random sample of 200 Republicans, 160 opposed the new tax ...

[mckennatimberlake]

In a random sample of 200 Republicans, 160 opposed the new tax laws. While in a random sample of 120 Democrats, 84 opposed the new tax laws. Determine a 95 confidence interval estimate for the difference between the proportions of Republicans and Democrats opposed to this new law.

Question 2

In a sample of 100 Republicans, 60 favored the president's anti-drug program. While in a sample of 150 Democrats, 84 favored his program. At 95 confidence, test to see if there is a significant difference in the proportions of the Democrats and the Republicans who favored the president's anti-drug program.

[ladyjames123]

Answer to Question 1

.001 to .199

Answer to Question 2

H0: p1  p2 = 0
Ha: p1  p2  0 z = .63; p-value = .5286; do not reject H0

[mckennatimberlake]

Thanks for the timely response, appreciate it

[dyrone]

Gracias!