In an opinion survey, a random sample of 1000 adults from the USA and 1000 adults from Germany were asked whether they supported the death penalty. 560 American adults and 590 German adults indicated that they supported the death penalty. The researcher wants to know if there is sufficient evidence to conclude that the proportion of adults who support the death penalty in the US is different than that in Germany. Use a confidence interval (at a confidence level of 98%) to answer. (Use USA-Germany) 1. What is the correct calculated test statistic? 2. What is the calculated 98% Confidence Interval?
Added by Timothy M.
Step 1
Let p1 be the proportion of American adults who support the death penalty, and p2 be the proportion of German adults who support the death penalty. Step 2: Calculate the sample proportions. $\hat{p}_1 = \frac{560}{1000} = 0.56$ $\hat{p}_2 = \frac{590}{1000} = Show more…
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