Statistics questions

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 9th, 2015

Z=2.326

upper limits for students=x+S.D*Z/N^0.5=7.51+0.874

lower limits for students=7.51-0.874

upper limit for faculty=6.47+0.774

lower limit for faculty=6.47-0.774

resultant S.D=(n1^2*s1+n2^2*s2)/(n1^2+n2^2)=3.09

margin of error=S.D*Z/(N)^0.5=0.601935

Apr 9th, 2015

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