#3-4: In response to the Covid-19 virus, The CDC issued a recommendation to wear a mask when out in public spaces. The following table gives the results of a survey given to New Yorkers on whether they will wear a mask along with their political affiliation. Yes No Republican 160 112 Democrat 195 88 Independent 120 15 3) Does the survey suggest that the proportion of all republicans who say they will wear a mask less than the proportion of all democrats who say they will wear a mask? Use α = .05. 4) Construct a 95% confidence interval for the difference in the population proportion of Republicans and Democrats who will not wear a mask. Does your interval suggest that there is a difference?
#3-4: In response to the Covid-19 virus, The CDC issued a recommendation to wear a mask when out in public
spaces. The following table gives the results of a survey given to New Yorkers on whether they will wear a
mask along with their political affiliation.
Yes No
Republican 160 112
Democrat 195 88
Independent 120 15
3) Does the survey suggest that the proportion of all republicans who say they will wear a mask less than the
proportion of all democrats who say they will wear a mask? Use α = .05.
4) Construct a 95% confidence interval for the difference in the population proportion of Republicans and
Democrats who will not wear a mask. Does your interval suggest that there is a difference?
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