For Expert help and assignment handling,
1
STT Exam 1 Questions and Answers (100%
Correct Answers) Already Graded A+
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?
© 2026 Assignment Expert
A. The sample is the people in the particular country who did not
respond.
Guru01 - Stuvia
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. Ans:
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.
(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.
,For Expert help and assignment handling,
2
C. The population is the 849 people who responded.
D. The population is the 9% who reported having only 1 good friend. Ans:
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.
© 2026 Assignment Expert
(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%).
Guru01 - Stuvia
B. The statistic reported is the number of people who responded 849.
C. The statistic reported is the number of good friends.
D. The statistic reported is the percentage of respondents who reported
having more than 1 good friend. Ans: 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.
,For Expert help and assignment handling,
3
(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.
© 2026 Assignment Expert
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
Guru01 - Stuvia
who are concerned about global warming, while the population is the
set of all people between the ages of 18 and Ans: 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.
, For Expert help and assignment handling,
4
B. The percentages quoted are parameters because they can be used
to make decisions or predictions about a population.
C. The percentages quoted are statistics because they are a numerical
summary of a sample taken from a population.
D. The percentages quoted are statistics because they represent all of
the possible responses to the poll question. Ans: C. The percentages
quoted are statistics because they are a numerical summary of a
sample taken from a population.
© 2026 Assignment Expert
A government agency uses a few new sports cars of each model every
year to collect data on pollution emission and gasoline mileage
Guru01 - Stuvia
performance. For model A, identify what is meant by (a) subject, (b)
sample, and (c) population.
(a) What is the subject of the study conducted by the government
agency?
A. The new model A sports cars
B. The model A sports cars
C. Sportscars
D. New sports cars Ans: A. The new model A sports cars
A government agency uses a few new sports cars of each model every
year to collect data on pollution emission and gasoline mileage
performance. For model A, identify what is meant by (a) subject, (b)
sample, and (c) population.
1
STT Exam 1 Questions and Answers (100%
Correct Answers) Already Graded A+
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?
© 2026 Assignment Expert
A. The sample is the people in the particular country who did not
respond.
Guru01 - Stuvia
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. Ans:
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.
(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.
,For Expert help and assignment handling,
2
C. The population is the 849 people who responded.
D. The population is the 9% who reported having only 1 good friend. Ans:
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.
© 2026 Assignment Expert
(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%).
Guru01 - Stuvia
B. The statistic reported is the number of people who responded 849.
C. The statistic reported is the number of good friends.
D. The statistic reported is the percentage of respondents who reported
having more than 1 good friend. Ans: 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.
,For Expert help and assignment handling,
3
(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.
© 2026 Assignment Expert
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
Guru01 - Stuvia
who are concerned about global warming, while the population is the
set of all people between the ages of 18 and Ans: 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.
, For Expert help and assignment handling,
4
B. The percentages quoted are parameters because they can be used
to make decisions or predictions about a population.
C. The percentages quoted are statistics because they are a numerical
summary of a sample taken from a population.
D. The percentages quoted are statistics because they represent all of
the possible responses to the poll question. Ans: C. The percentages
quoted are statistics because they are a numerical summary of a
sample taken from a population.
© 2026 Assignment Expert
A government agency uses a few new sports cars of each model every
year to collect data on pollution emission and gasoline mileage
Guru01 - Stuvia
performance. For model A, identify what is meant by (a) subject, (b)
sample, and (c) population.
(a) What is the subject of the study conducted by the government
agency?
A. The new model A sports cars
B. The model A sports cars
C. Sportscars
D. New sports cars Ans: A. The new model A sports cars
A government agency uses a few new sports cars of each model every
year to collect data on pollution emission and gasoline mileage
performance. For model A, identify what is meant by (a) subject, (b)
sample, and (c) population.
