Statistics questions

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 11th, 2015

xbar =3.5

sigma= 1.1

standard error =1.1/sqrt(n) =1.1/sqrt(656)=0.043

critical value =1.28

Margin of error = 1.28*0.043=0.055

Lower limit = 3.5-0.055 =3.445 = 3.4

Upper limit =3.5+0.055 = 3.555 = 3.6


Apr 11th, 2015

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