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December 21, 2014

December 21, 2014

Posted by **jenny** on Thursday, June 23, 2011 at 1:56pm.

H0: μA ≤ μB, and H1: μA > μB 1 = 12, 2 = 9, s1= 5, s2 = 3, n1 =13, n2 =10.

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**MathGuru**, Thursday, June 23, 2011 at 6:32pmStandard deviation (standard error) of the difference between two means =

√[(s1^2 / n1) + (s2^2 / n2)]

I'll let you take it from here.

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