Question

The mean length of 6 childrens' big finger is 9cm. The mean length of 4 adults' big finger is 9.7cm. What is the mean length (rounded to 2 DP) of these 10 people's big finger?

Answer 1

(6*9)+(4*9.7)=92.8

92.8÷10= 9.28cm

Answer 2

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Explanation:

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