Homework Help: statistics

Posted by Carrie on Wednesday, February 9, 2011 at 8:15pm.

A sample of n=5 scores has a mean 50. Another sample has n=10 scores and a mean of 60. If the two samples are combined, will the combined sample mean be greater than 55

statistics - TutorCat, Wednesday, February 9, 2011 at 9:16pm
[n1(mean1)+n2(mean2)]/(n1+n2)
statistics - Anonymous, Monday, September 3, 2012 at 2:03pm
no

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