Answer: A. <em>Representative, since blood types are probably not different among students at the cafeteria compared to the U.S. population</em>, B. <em>Not representative, since students in the cafeteria may eat most of their meals at the cafeteria instead of eating fast food</em>
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See it up on brainly it should give you your answer that you need!!
Answer: 2 out of 20=2/20 but simplified 1/10 for trying to get a green marble.
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