Statistics question number 31

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 20th, 2015

p1hat-p2at = 0.56-0.61 = -0.05

standard error =sqrt(0.56*0.44/578+0.61*0.39/625)=0.028

critical value =1.645

margin of error= 1.645*0.0284=0.0467 =0.047

lower limit = -0.05-0.047 = -0.097

upper limit = -0.05+0.047 = -.003

if it is other way

p2hat-p1hat = 0.61-0.56 =0.05

lower limit = 0.05-0.047 = 0.003

upper limit=0.05+0.047 =0.097 

Apr 20th, 2015

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