One sample has n = 4 scores and M = 10 . A second sample has n = 8 scores and M = 4 . If the two samples are combined, what is the mean for the combined sample?
a. 72/12 = 6
b. 14/5 = 2.8
c. 14/12 = 1.167
d. Cannot be determined with the information given
A
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