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Author Question: In a random sample of 200 Republicans, 160 opposed the new tax laws. While in a random sample of 120 ... (Read 92 times)

mckennatimberlake

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on: Aug 1, 2018
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.


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ladyjames123

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Reply #1 on: Aug 1, 2018
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

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Reply 2 on: Aug 1, 2018
Great answer, keep it coming :)

covalentbond

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Reply 3 on: Yesterday
Wow, this really help

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