As part of a statistics project, a 6th grade teacher brings to class a container with 200 red marbles and 800 white marbles which are thoroughly mixed. To figure out how many marbles in the container are red without actually counting them all, a student randomly draws 150 marbles from the container. Of the 150 marbles drawn, 33 are red.The data collection method can best be described as
A. a controlled study.
B. a census.
C. a clinical study.
D. a survey.
E. none of these
Answer: D
Mathematics
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A.
B.
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D.
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A. True B. False
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Mathematics
Provide an appropriate response.Why is scientific notation used?
What will be an ideal response?
Mathematics