MATH 1280: Introduction to
Statistics
⏹ An automobile producing company operates car dealerships that sell
its cars. In order to assess the service costumers get at the dealerships a
team from the Customer Relationship Department was assembled. The
team was sent to 20 randomly selected dealerships. Each dealership was
visited once by the team for an entire working day. During a visit the
team interviewed all the customers that arrived at that dealership.
One of the questions that each of the customers were asked is: "Do you
currently possess a car made by our company?" The answers were
marked down as "Yes", "No", or "Refuse to Answer", depending on the
customer's response. Answer: Select the correct answer in each of the
following 4 questions:
⏹ The population in this survey is: Answer: a. The researchers that
conducted the survey.
b. Customers that arrive at dealerships of the company. CORRECT
c. The automobile producing company.
d. Owners of cars that are produced by the company.
⏹ The sample in this survey is: Answer: a. The team that conducted the
survey.
b. Customers that arrive at dealerships of the company.
c. "Yes", "No", or "Refuse to Answer".
, d. Customers that arrive at the selected dealerships during the day of
visit. CORRECT
⏹ A parameter that may be targeted by this survey is: Answer: a. The
percentage of costumers that possess a car made by the company.
CORRECT
b. Customers that arrive at the selected dealerships during the day of
visit.
c. "Yes", "No", or "Refuse to Answer".
d. Owners of cars that are produced by the company.
⏹ A statistic that may be used to summarize the outcome of the survey
is: Answer: a. "Yes".
b. The percentage, among costumers that were interviewed, of those that
do not possess a car made by the company CORRECT
c. Customers that arrive at the selected dealerships during the day of
visit.
d. The team that conducted the survey.
⏹ The Customers Service Center of a large bank receive calls from
customers. The number of incoming calls between 8:00 AM and 8:10
AM in consecutive days were recorded. The number of incoming calls
during the working days of the month of September were:
8, 10, 6, 7, 12, 7, 8, 7, 8, 6, 9, 4, 6, 14, 10, 10, 10, 10, 6, 10, 12, 7
Statistics
⏹ An automobile producing company operates car dealerships that sell
its cars. In order to assess the service costumers get at the dealerships a
team from the Customer Relationship Department was assembled. The
team was sent to 20 randomly selected dealerships. Each dealership was
visited once by the team for an entire working day. During a visit the
team interviewed all the customers that arrived at that dealership.
One of the questions that each of the customers were asked is: "Do you
currently possess a car made by our company?" The answers were
marked down as "Yes", "No", or "Refuse to Answer", depending on the
customer's response. Answer: Select the correct answer in each of the
following 4 questions:
⏹ The population in this survey is: Answer: a. The researchers that
conducted the survey.
b. Customers that arrive at dealerships of the company. CORRECT
c. The automobile producing company.
d. Owners of cars that are produced by the company.
⏹ The sample in this survey is: Answer: a. The team that conducted the
survey.
b. Customers that arrive at dealerships of the company.
c. "Yes", "No", or "Refuse to Answer".
, d. Customers that arrive at the selected dealerships during the day of
visit. CORRECT
⏹ A parameter that may be targeted by this survey is: Answer: a. The
percentage of costumers that possess a car made by the company.
CORRECT
b. Customers that arrive at the selected dealerships during the day of
visit.
c. "Yes", "No", or "Refuse to Answer".
d. Owners of cars that are produced by the company.
⏹ A statistic that may be used to summarize the outcome of the survey
is: Answer: a. "Yes".
b. The percentage, among costumers that were interviewed, of those that
do not possess a car made by the company CORRECT
c. Customers that arrive at the selected dealerships during the day of
visit.
d. The team that conducted the survey.
⏹ The Customers Service Center of a large bank receive calls from
customers. The number of incoming calls between 8:00 AM and 8:10
AM in consecutive days were recorded. The number of incoming calls
during the working days of the month of September were:
8, 10, 6, 7, 12, 7, 8, 7, 8, 6, 9, 4, 6, 14, 10, 10, 10, 10, 6, 10, 12, 7
