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ARC-Challenge / MCAS_1999_8_16 / Betsy wants to find out if the rainfall in her town contains pollutants. The…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

Betsy wants to find out if the rainfall in her town contains pollutants. The best way for Betsy to gather this information would be to collect

choices

  • one sample on one rainy day.
  • one sample a day on several rainy days.
  • several separate samples on one rainy day.
  • several separate samples on several rainy days.

Discussion

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Source and history

Official source

initial import