Describe one difficulty of creating a stratified sample

Reference no: EM133367500

1. From a recent census in a particular residential area it was found that 95% of residents had English as their main language and 30% of the population were under 18 years old. The local library wants to explore this issue and decides to create a sample of 200 people.

(a) In a stratified sample, how many of the 200 people should be 18 years old or over and have a main language that is not English?

(b) Describe one difficulty of creating a stratified sample.

Reference no: EM133367500

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