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Math Problems
Precalculus
Identify biased samples
A teacher examined
2
2
2
different tests from each of her math classes. Each class had the same number of tests.
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Is this sample of the tests likely to be biased?
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Choices:
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(A)yes
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(B)no
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While blindfolded, Julie shuffled a deck of cards, then selected
29
29
29
cards.
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Is this sample of the cards in the deck likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
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Miranda, a supermarket employee, approached
50
50
50
random customers and asked whether they would be willing to discuss what they liked most about the store. She interviewed the
45
45
45
who said yes.
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Is this sample of the supermarket's customers likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
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In the dark, Allie picked out
8
8
8
shirts from her closet.
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Is this sample of the shirts in the closet likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
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Mackenzie, a talk show host, invited the studio audience to voice their opinions on raising the driving age. Of the
10
10
10
audience members who chose to speak,
2
2
2
of them were against the idea.
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Is this sample of the audience members likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
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Sasha questioned the
2
2
2
most experienced doctors at the hospital.
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Is this sample of the doctors at the hospital likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
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Deb polled the first
49
49
49
runners to finish a marathon.
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Is this sample of the runners likely to be biased?
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Choices:
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(A)yes
\newline
(B)no
Get tutor help
