Statistics question a.3

Statistics
Tutor: None Selected Time limit: 1 Day

May 1st, 2015

Z= (x1-x2)/(s1^2/n1+s2^2/n2)^0.5

(x1-x2)=1.44*12=8.48

upper limit=  8.48

lower limit= -8.48



May 1st, 2015

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