[A, SfS] Chapter 6: Hypothesis Testing: 6.6: Test for Difference Between Proportions
Hypothesis Test for a Difference Between Two Population Proportions
In a study conducted in the USA in 2008, researchers found that in a group of #230# European-American HIV-positive smokers, #102# of them had used a nicotine patch to try to quit smoking, while in a group of #72# Hispanic-American HIV-positive smokers, #20# had used a nicotine patch.
Can we conclude that the proportion of nicotine patch users is greater among European-American HIV-positive smokers? Conduct an appropriate hypothesis test. Report the P-value, using #3# decimal places in your answer.
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