Deck 10: Sample Surveys

Question 1

A school district administrator sent a survey to all teachers in the district.Only 30% of the teachers responded to the survey.Which of the following is true?
I)The people that did not responded are likely to be similar to those that did so he should
Use them as the sample.
II)This survey design suffered from non-response bias.
III)Because he sent the survey to everyone, this is a census and the results can be applied to
The whole population.

A)I only
B)II only
C)I and II only
D)II and III only

Answer 1

B

Question 2

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop.To determine if their proposal is of interest,
They plan to survey a random sample of their regular customers.Which of the following is
The parameter of interest in the Molly's Reach study?

A)all regular Molly's Reach customers
B)% of regular Molly's Reach customers who are interested in their gift shop
C)Molly's Reach customers who belong to the rewards program
D)% of Molly's Reach customers who belong to the rewards program that don't shop online

Answer 2

B

Question 3

Which of these is not an advantage of using a stratified sample instead of a simple random sample?

A)the stratified sample reduces bias
B)the stratified sample reduces sample to sample variability
C)the stratified sample can prevent an unrepresentative sample such as one of all males from a mixed gender population.
D)the stratified random sample allows you to get information about each stratum

Answer 3

A

Question 4

The online MBA director at a large business school surveys a sample of current students to determine their level of satisfaction with the program.She finds that 67% are "very satisfied"
With the online program.This is a

A)statistic.
B)parameter.
C)target population.
D)sampling frame.
E)good result.

Question 5

The administration of a large university is interested in learning about the types of wellness programs that would interest its employees.Suppose that the university randomly selects a
School (e.g., the Business School) and surveys all of the individuals (administration, faculty,
Professional staff, clerical and maintenance) who work in that school.This sampling plan is
Called

A)Simple Random Sampling
B)Stratified Sampling
C)Cluster Sampling
D)Systematic Sampling
E)Convenience Sampling

Question 6

The administration of a large university is interested in learning about the types of wellness programs that would interest its employees.Suppose that there are five categories of
Employees (administration, faculty, professional staff, clerical and maintenance) and the
University decides to randomly select ten individuals from each category.This sampling plan
Is called

A)Simple Random Sampling
B)Stratified Sampling
C)Cluster Sampling
D)Systematic Sampling
E)Convenience Sampling

Question 7

Question 8

Hoping to get information that would allow them to negotiate new rates with their advertisers, Natural Health magazine phoned a random sample of 600 subscribers.64% of
Those polled said they use nutritional supplements.Which is true?
I)The population of interest is the people who read this magazine.
II)"64%" is not a statistic; it's the parameter of interest.
III)This sampling design should provide the company with a reasonably accurate estimate of
The percentage of all subscribers who use supplements.

A)I only
B)I and II only
C)I and III only
D)II and III only

Question 9

The main ideas of sampling do not include

A)Sample size matters
B)Examine a part of the whole
C)The fraction of the larger population determines the precision of the resulting statistics
D)Randomization
E)All ideas of sampling should be included

Question 10

A consumer research group is interested in how older drivers view hybrid cars.Specifically, they wish to assess the percentage of drivers in the U.S.50 years of age or older who intend
To purchase a hybrid in the next two years.They selected a systematic sample from a list of
AARP (American Association of Retired Persons) members.Based on this sample, they
Estimated the percentage to be 17%.Which of the following statements about this study is
True?

A)17% of all U.S.drivers 50 years of age or older intend to purchase a hybrid in the next two years.
B)17% is a parameter.
C)17% is a statistic.
D)Both A and B
E)Both A and C

Question 11

Shortly after the Sandy Hook Elementary School shooting in December 2012, a local television news program asked viewers to call in with their opinion about gun control.These
Results were likely biased because

A)of a bad sampling frame.
B)of an undefined target population.
C)leading questions.
D)of a voluntary response sample.
E)of measurement error.

Question 12

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop.To determine if their proposal is of interest,
They plan to survey a random sample of their regular customers.All regular Molly's Reach
Customers is known as the ________ of the study.

A)parameter
B)statistic
C)target population
D)sampling frame
E)sample

Question 13

The principal of a small elementary school wants to select a simple random sample of 24 students.The school has 12 classrooms with 18 students in each class.She decides to
Randomly select two students from each classroom.Is this a simple random sample?

A)Yes, because a stratified sample is a type of simple random sample.
B)Yes, because the students were selected at random.
C)Yes, because each student had an equal chance to be selected.
D)No, because not all combinations of 24 students could have been chosen.
E)No, because each student did not have an equal chance of being selected.

Question 14

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop.To determine if their proposal is of interest,
They plan to survey a random sample of their regular customers.Suppose that Molly's
Reach's regular customers belong to a rewards program and have a customer rewards ID
Number.Molly's Reach decides to randomly select 100 numbers.This sampling plan is
Called

A)Simple Random Sampling
B)Stratified Sampling
C)Cluster Sampling
D)Systematic Sampling
E)Convenience Sampling

Question 15

Question 16

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop.To determine if their proposal is of interest,
They plan to survey a random sample of their regular customers.One member of the
Management team at Molly's Reach suggests that their survey could be conducted online.
Customers logging on to the online store would be asked to take a few minutes to complete
The survey and would be offered a coupon as incentive to participate.Which of the following
Statements is true?

A)This is a voluntary response sample.
B)This would result in an unbiased random sample.
C)This would result in a biased sample.
D)Both A and B
E)Both A and C

Question 17

Which of the following survey questions is leading?

A)Given the prevalence of identity theft, are you reluctant to provide credit card information online?
B)Are you confident that any information you provide online is secure?
C)Are you concerned about the security of online transactions?
D)Both A and B
E)Both B and C

Question 18

Molly's Reach, a regional restaurant and gift shop, has recently launched an increased sales campaign, particularly focused on their gift shop.To determine if their proposal is of interest,
They plan to survey a random sample of their regular customers.Suppose that Molly's Reach
Has an alphabetized list of regular customers who belong to their rewards program.After
Randomly selecting a customer on the list, every 25th customer from that point on is chosen
To be in the sample.This sampling plan is called

A)Simple Random Sampling
B)Stratified Sampling
C)Cluster Sampling
D)Systematic Sampling
E)Convenience Sampling

Question 19

A consumer research group is interested in how older drivers view hybrid cars.Specifically, they wish to assess the percentage of drivers in the U.S.50 years of age or older who intend
To purchase a hybrid in the next two years.They selected a systematic sample from a list of
AARP (American Association of Retired Persons) members.Based on this sample, they
Estimated the percentage to be 17%.The sampling frame for this study is

A)all drivers in the U.S.50 years of age or older
B)17%
C)the list of AARP members
D)how older drivers view hybrid cars
E)none of the above