(Answered) Example of what type of sample

Statistics

You want to assess the attitudes towards police by the people in the community. You decide to bring the people into subgroups according to their experiences. The subgroups or strata are drivers with speeding tickets , driver without speeding tickets, and non-drivers. You then conduct an SRS of one hundred civilians from each subgroup. This is an example of what type of sample?

distributed allocation sample
scattered risk sample
stratified random sample
cluster or multistage sample

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