Mathematics
Mathematics, 26.11.2020 14:20, zanaplen27

Visitors in a cinema are either children, adults or pensioners the ratio of children to adult visitors is 1 : 2
the ratio of adult to pensioners is 3 : 4
a stratified sample of 85 is to be taken from the cinema visitors

how many pensioners should be in the sample?

answer
Answers: 3

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Visitors in a cinema are either children, adults or pensioners the ratio of children to adult visit...

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