6.3.21 Adults who say that human Country A Country The table to the right shows
ID: 3369940 • Letter: 6
Question
6.3.21 Adults who say that human Country A Country The table to the right shows the results of a survey in which 2560 adults from Country A, 1147 aduilts from Contry B, and 107T acdults trom Country C were asked human actvity contrbutes to ghotoal wming Complete?ts (a),(b). and (c) contributes to global 89% Construct a 95% corki ree "tervalfor the proporton of adubfrom Cautry A who say human achty contrittis togktaiwamng (0601,0638) Round to throe decimal places as needed ) (0 872.0900) Round to three decimal places as needed ) Round to theree decimal places as meoded) e) Corstuct a 96% cordidence rterval the proporton of aduls hom anty B who say human achty contbutes to gitalwawg a95% coréderce itervalfor the proportion of adh,from Country C who say human achty cortetas bglobawaw Enter your answer in the edit felds and then click Check Answer Clear Al rAll parts showing 0Explanation / Answer
Solution :
(c) Given that country C of p = 0.95 , n = 1077
=> q = 1 - p = 0.05
for 95% confidence interval , Z = 1.96
=> The 95% confidence interval of the proportion is p +/- Z*sqrt(p*q/n)
=> 0.95 +/- 1.96*sqrt(0.95*0.05/1077)
=> (0.937 , 0.963)
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