Mathematics, 31.03.2021 17:50 mimi5937

The mean length of 7 childrens' big finger is 12.2cm. The mean length of 3 adults' big finger is 17.6cm. What is the mean length (rounded to 2 DP) of these 10 people's big finger?

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The mean length of 7 childrens' big finger is 12.2cm. The mean length of 3 adults' big finger is 17....