ㅗpeachesㅗ 2,148 Posted April 19, 2015 Share Posted April 19, 2015 i have a midterm tomorrow and theres part of the subject i really dont understand. i have this question In a survey of 400 likely voters, 215 responded that they would vote for the incumbent and 185 responded that they would vote for the challenger. Let p denote the fraction of all likely voters who preferred the incumbent at the time of the survey, and let pˆ be the fraction of survey respondents who preferred the incumbent. i already found pˆ = Y¯ = 215 400 = 0.5375 and SE(ˆp) = q V ard(ˆp) = 0.02493. now i have the question" What is the p-value for the test 0 H p: 0.5 = vs. 1 H p: 0.5 ≠? now i have the answers on how to solve it, but i absolutely dont understand it at all if someone could please explain to me, i would love them forever and give them a shit ton of wons p − value = 2Φ µ Y¯ act − µY,0 SE(Y¯ )= 2Φ µ ¯ 0.5375 − 0.5 = 0.02493 = 2Φ (−1.504) ≈ 2(0.066) = 0.132. wtf is Φ and how do you use it. like how did they go from 2Φ (−1.504) to 2(0.066)? Link to comment Share on other sites More sharing options...
ã…—peachesã…— 2,148 Posted April 19, 2015 Author Share Posted April 19, 2015 ill translate something korean for you!!!1 Link to comment Share on other sites More sharing options...
Midna 2,032 Posted April 19, 2015 Share Posted April 19, 2015 cool but why is this in the Japanese section? Link to comment Share on other sites More sharing options...
ã…—peachesã…— 2,148 Posted April 19, 2015 Author Share Posted April 19, 2015 cool but why is this in the Japanese section? Link to comment Share on other sites More sharing options...
abra 40,910 Posted April 19, 2015 Share Posted April 19, 2015 wtf is this? is it maths? Link to comment Share on other sites More sharing options...
Rosetty 1,342 Posted April 19, 2015 Share Posted April 19, 2015 I don't know what this s at all ;;A;; Try posting this on yahoo answers tbh Link to comment Share on other sites More sharing options...
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