Question

MAT 121 Z Homework: 7.2 Score: 0 of 1 pt 7.2.26 | 13of 15(14complete) ?| ? Score: 91.11%, 13 67 of 15 pts umg peredel 11 years 1530 ofthe people selected trpand ry duty wre sampled, and 3t% of them sere in m rart. Us. the ?mle data transtrue aw%rnd ron nt rval est-af th prop non o' rand ur, ma ters who wo e irves arts G en that aneru bn pople ?? se for ry d dy p<?(Rournd tn tree de inal plaoes as needed) Enler your answer in the edit fields and then cick Check Ansiver 1:23 AM @ ^ t; 4/29/2013 ?Type here to search

Answer 1

Given, p^^= 0.31 (31%) n = 1530 At 90% C.I, Z = 1.64 P^^plusminus Z times squareroot P^^(1 - p^^)/n 0.31 plusminus 1.64 times squareroot 0.31 (1 - 0.31)/1530 0.31 plusminus 1.64 times 0.012 0.31 plusminus 0.019 0.31 -0.019 to 0.31 plusminus 0.019 0.291 to 0.329