1.The table to the right shows the results of a survey in which style=”background-color:transparent;”>2553 adults from Country​ A, 1140 adults from Country​ B, and 1064 adults from Country C were asked if human activity contributes to global warming. Complete parts​ (a), (b), and​ (c).
country A=67% country B=87% country c=91%
a.) Construct a 99% confidence interval for the proportion of adults from Country Upper A who say human activity contributes to global warming. _,_
2.The table shows the results of a survey in which separate samples of 400 adults each from the​ East, South,​ Midwest, and West were asked if traffic congestion is a serious problem in their community. Complete parts​ (a) and​ (b).East-37% South 33% Midwest 26% West 53%
a)Construct a​ 95% confidence interval for the proportion of adults from the West who say traffic congestion is a serious problem. The​ 95% confidence interval for the proportion of adults from the West who say traffic congestion is a serious problem is _,_
3. Construct the confidence interval for the population mean uc=0.98 x=7.5 o=0.3 n =46A) A 98​% confidence interval for is _,_

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