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Math Problems
Precalculus
Identify biased samples
Judy questioned the top
5
5
5
contestants in the dance competition.
\newline
Is this sample of the contestants in the competition likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
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In the dark, Stanley picked out
5
5
5
shirts from his closet.
\newline
Is this sample of the shirts in the closet likely to be biased?
\newline
Choices:
\newline
(A) yes
\newline
(B) no
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Debbie rides her bike to school every day. On Monday, she rode
1.5
1.5
1.5
miles to school in
10
10
10
minutes. On her way home, she took a different route through a park, and rode
3
3
3
miles in
15
15
15
minutes. On which route did Debbie ride at a faster pace?
\newline
Choices:
\newline
(A)going to school
\newline
(B)going home
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A teacher examined
2
2
2
different tests from each of her math classes. Each class had the same number of tests.
\newline
Is this sample of the tests likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
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While blindfolded, Julie shuffled a deck of cards, then selected
29
29
29
cards.
\newline
Is this sample of the cards in the deck likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
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In the dark, Allie picked out
8
8
8
shirts from her closet.
\newline
Is this sample of the shirts in the closet likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
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Deb polled the first
49
49
49
runners to finish a marathon.
\newline
Is this sample of the runners likely to be biased?
\newline
Choices:
\newline
(A)yes
\newline
(B)no
Get tutor help
