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Explanation & Answer
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
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A random sample of 5 year old children is evaluated for being left- or right-handed. The size n = 100 children of which 79 ...
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