Statistics wuestion a.3

Statistics
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May 1st, 2015

s.e. of difference between means when population variances are not equal is estimated by Sqrt(s1^2/n1 +s2^2/n2)= Sqrt(625/7 +841/14) =12

May 1st, 2015

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May 1st, 2015
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May 1st, 2015
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