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Mathematics, 17.12.2020 17:20 hchvvhhv

At a primate reserve, the mean age of all the male primates is 15 years, and the mean age of all female primates is 19 years. Which of the following must be true about the mean age m of the combined group of male and female primates at the primate reserve? A
m = 17
B
m greater than 17
C
m less than 17
D
15 less than m less than 19

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