SOLUTION: difference between a single means hypothesis test and a two means hypothesis test

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Question 134173: difference between a single means hypothesis test and a two means hypothesis test
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
difference between a single means hypothesis test
Test statistic = x-bar/[sigma/sqrt(n)]
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and a two means hypothesis test
Test statistic = (x1bar-x2bar)/[sqrt[(var1/n1) + (var2/n2)]
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Cheers,
Stan H.