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?
Answers: 3
Mathematics, 21.06.2019 18:30
To determine the number of deer in a forest a forest ranger tags 280 and releases them back
Answers: 3
Visitors in a cinema are either children, adults or pensioners
the ratio of children to adult visit...
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