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Here is some data about a group of boys and a group of girls. range of heights: 0.42 m mean height: 1.55 m mean height: 1/40m range of heights: 0.36 m Boys: number: 20 Girls: number: 10 For the combined group of boys and girls, work out, if possible: a the number of children b the mean height Son c the range of heights.
Sagot :
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