Statistic question a.3

Statistics
Tutor: None Selected Time limit: 1 Day

Apr 30th, 2015

n1=10 

s1= 3.08

n2=20

s2 = 1.75

sp =sqrt((9*3.08^2+19*1.75^2)/28)

sp =2.26436

standard error =sp *sqrt(1/10+1/20)=0.876983=0.88


Apr 30th, 2015

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Apr 30th, 2015
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Apr 30th, 2015
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