tcarston3885 tcarston3885
  • 15-07-2020
  • Mathematics
contestada

A school has 300 eighth-grade students and 200 ninth-grade students. The secretary randomly selects 12 eighth-grade students and 8 ninth-grade students to obtain a sample of size 20. What kind of sampling is this?


Simple random sampling

Stratified random sampling

Systematic sampling

Convenience sampling

Respuesta :

dylenwallace dylenwallace
  • 15-07-2020

Answer:

stratified random sampling

Step-by-step explanation:

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