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Mathematics, 09.04.2021 02:00 officialgraciela67

) If you were taking a survey of the different colors of leaves seen in September, which of the following would be an unbiased sample?

A) 100 leaves on tree branches
B) 50 fallen leaves and 50 leaves on branches
C) 100 fallen leaves collected from the ground
D) 50 fallen Oak leaves, 50 Oak leaves on branches

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