A recent survey asked, â€œIf the residents of an area donâ€™t vote in favor of an eatery, is it right that it should not be opened in that area?â€ Of 458 respondents, 355 said yes and 103 said no. Show that a 99% confidence interval for the population proportion who would say yes is (0.725, 0.825). Interpret.
When a 2016 research study asked whether there is solid evidence of global warming, 87% of liberals said yes whereas 25% of conservatives said yes. For conservatives, if , find and interpret a
(a) 95% and
(b) 99% confidence interval for a relevant parameter.