AnswersMath 7 B M12 2526 S2Comparing Box Plots — Unit testQuestion 15
15
QuizMultiple Choice

Comparing Box Plots — Unit test

Question 15 • Math 7 B (M12 25/26 S2)

A scientist is studying tulips and daffodils. The scientist estimates that there are 150 tulips in the population of 600 tulips and daffodils. He chooses flowers from random parts of the garden to study. Which best explains how he can choose a random sample of flowers to represent the population?

Answer
A
He can choose 50 flowers.
B
He can choose 25 tulips and 25 daffodils.
C
He can choose 15 tulips and 60 daffodils.
D
He can choose 10 tulips and 30 daffodils.

Explanation

Tulips make up 150 ÷ 600 = 1/4, or 25%, of the population, so daffodils make up the other 75%. A representative sample should keep that 1-to-3 ratio. Choice D has 10 tulips and 30 daffodils, which is the same ratio.

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