1
STT Exam 1 Questions with Answers (100% Correct
Answers)
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
(a) What is the sample for this survey?
A. The sample is the people in the particular country who did not
respond.
B. The sample is the 849 people who responded.
C. The sample is the public in the particular country.
D. The sample is the 9% who reported having only one good friend.
Answer: B. The sample is the 849 people who responded.
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
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(b) What is the population for this survey?
A. The population is the public in the particular country.
B. The population is all of the people in the world.
C. The population is the 849 people who responded.
D. The population is the 9% who reported having only 1 good friend.
Answer: A. The population is the public in the particular country.
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
(c) What is the statistic reported for this survey?
A. The statistic reported is the percentage of respondents who reported
having only 1 good friend (9%).
B. The statistic reported is the number of people who responded 849.
C. The statistic reported is the number of good friends.
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,3
D. The statistic reported is the percentage of respondents who reported
having more than 1 good friend. Answer: A. The statistic reported is
the percentage of respondents who reported having only 1 good friend
(9%).
A poll of about 1250 people between the ages of 18 and 34
asked, "How concerned are you about the problem of
global warming?" The possible responses were very concerned,
somewhat concerned, not very concerned, and haven't heard about it.
The poll reported percentages (46, 30, 22, 3) in these categories.
(a) Identify the sample and the population. Choose the correct answer
below.
A. The sample is the set of 1250 people that were polled, while the
population is the set of all people between the ages of 18 and 34.
B. The sample is the set of people between the ages of 18 and 34, while
the population is the set of all people.
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C. The sample is the set of 1250 people that were polled, while the
population is the set of all people.
D. The sample is the set of all people between the ages of 18 and 34
who are concerned about global warming, while the population is the
set of all people between the ages of 18 and Answer: A. The sample is
the set of 1250 people that were polled, while the population is the set
of all people between the ages of 18 and 34.
A poll of about 1250 people between the ages of 18 and 34
asked, "How concerned are you about the problem of
global warming?" The possible responses were very concerned,
somewhat concerned, not very concerned, and haven't heard about it.
The poll reported percentages (46, 30, 22, 3) in these categories.
(b) Are the percentages quoted statistics or parameters? Why?
A. The percentages quoted are parameters because they are a
numerical summary of the entire population.
© 2025 All rights reserved
STT Exam 1 Questions with Answers (100% Correct
Answers)
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
(a) What is the sample for this survey?
A. The sample is the people in the particular country who did not
respond.
B. The sample is the 849 people who responded.
C. The sample is the public in the particular country.
D. The sample is the 9% who reported having only one good friend.
Answer: B. The sample is the 849 people who responded.
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
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,2
(b) What is the population for this survey?
A. The population is the public in the particular country.
B. The population is all of the people in the world.
C. The population is the 849 people who responded.
D. The population is the 9% who reported having only 1 good friend.
Answer: A. The population is the public in the particular country.
One year a survey asked a group of people from a certain country the
following question, "How many good friends do you have ?"Of the 849
people who responded, 9% reported having only 1 good friend.
(c) What is the statistic reported for this survey?
A. The statistic reported is the percentage of respondents who reported
having only 1 good friend (9%).
B. The statistic reported is the number of people who responded 849.
C. The statistic reported is the number of good friends.
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,3
D. The statistic reported is the percentage of respondents who reported
having more than 1 good friend. Answer: A. The statistic reported is
the percentage of respondents who reported having only 1 good friend
(9%).
A poll of about 1250 people between the ages of 18 and 34
asked, "How concerned are you about the problem of
global warming?" The possible responses were very concerned,
somewhat concerned, not very concerned, and haven't heard about it.
The poll reported percentages (46, 30, 22, 3) in these categories.
(a) Identify the sample and the population. Choose the correct answer
below.
A. The sample is the set of 1250 people that were polled, while the
population is the set of all people between the ages of 18 and 34.
B. The sample is the set of people between the ages of 18 and 34, while
the population is the set of all people.
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, 4
C. The sample is the set of 1250 people that were polled, while the
population is the set of all people.
D. The sample is the set of all people between the ages of 18 and 34
who are concerned about global warming, while the population is the
set of all people between the ages of 18 and Answer: A. The sample is
the set of 1250 people that were polled, while the population is the set
of all people between the ages of 18 and 34.
A poll of about 1250 people between the ages of 18 and 34
asked, "How concerned are you about the problem of
global warming?" The possible responses were very concerned,
somewhat concerned, not very concerned, and haven't heard about it.
The poll reported percentages (46, 30, 22, 3) in these categories.
(b) Are the percentages quoted statistics or parameters? Why?
A. The percentages quoted are parameters because they are a
numerical summary of the entire population.
© 2025 All rights reserved
