Question 1

The true population can only be found in the estimate range of values.

Accepted Answer

A) True 
 B)False  False

Question 2

A researcher wants to estimate a population mean. The level of tolerable sampling error is 0.2 of a purchase occasion, with a confidence level of 95.44%. If the estimated population variance is 5 for the most important question in the study, what is the desired sample size?

Accepted Answer

1) at 95.44% confidence, Z = 2
2) sample means formula is appropriate
3) Variance = 5
4) Tolerable Error = .2
5) Computed Sample size of 500

Question 3

How can a researcher estimate the population standard deviation before selecting the sample?

Accepted Answer

A)  use results from a prior survey 
B)  conduct a pilot survey 
C)  use secondary data 
D)  use judgment 
E)  all are ways to estimate standard deviation 
A)  use results from a prior survey 
B)  conduct a pilot survey 
C)  use secondary data 
D)  use judgment 
E)  all are ways to estimate standard deviation E

Question 4

The finite population correction factor (FPC) is an adjustment to the required sample size that is made in cases where the sample is expected to be equal to 5 percent or more of the total population.

Accepted Answer

A) True 
 B)False

Question 5

The "budget available" approach forces the researcher to explore alternative data-collection approaches and to carefully consider the value of information in relation to cost.

Accepted Answer

A) True 
 B)False

Question 6

A type I error concludes that there is no difference when there is a difference.

Accepted Answer

A) True 
 B)False

Question 7

___________ sampling error is the amount of sampling error the researcher is willing to accept.

Accepted Answer

A)  Given 
B)  Projected 
C)  Accepted 
D)  Allowable 
A)  Given 
B)  Projected 
C)  Accepted 
D)  Allowable

Question 8

Which of the following would increase the necessary sample size in a study?

Accepted Answer

A)  smaller mean of the variables in question 
B)  less need for precision 
C)  need to divide sample into sub-groups 
D)  larger population 
E)  none of the above 
A)  smaller mean of the variables in question 
B)  less need for precision 
C)  need to divide sample into sub-groups 
D)  larger population 
E)  none of the above

Question 9

About 68% of the area under a standard normal curve covers one _________.

Accepted Answer

A)  mean 
B)  sample 
C)  variance 
D)  standard deviation 
E)  none of the above 
A)  mean 
B)  sample 
C)  variance 
D)  standard deviation 
E)  none of the above

Question 10

You wish to complete 300 phone interviews. Using a random-digit sample, you can expect your working phone rate will be only about 60 percent. How many calls will you likely have to make to achieve your desired interviews?

Accepted Answer

Start by dividing the number o

Question 11

A researcher has been asked to determine if offering a discount drink during happy hour to those who purchase a drink in the morning increases the likelihood of their return in the afternoon, what statistic would he or she be most interested in?

Accepted Answer

A)  variance 
B)  mean 
C)  standard deviation 
D)  proportion 
A)  variance 
B)  mean 
C)  standard deviation 
D)  proportion

Question 12

Prior survey results can help a researcher estimate population standard deviation.

Accepted Answer

A) True 
 B)False

Question 13

Subgroups are often chosen based on demographics of the sample, such as gender, income, etc.

Accepted Answer

A) True 
 B)False

Question 14

The greater the number of subgroups to be analyzed, the smaller the necessary sample size.

Accepted Answer

A) True 
 B)False

Question 15

A type II error concludes that there is no difference when there is a difference.

Accepted Answer

A) True 
 B)False

Question 16

Population size is the most important determinant of effective sample size.

Accepted Answer

A) True 
 B)False

Question 17

A normal distribution with a mean of zero and a standard deviation of one is a __________.

Accepted Answer

A)  normal distribution. 
B)  chi-square distribution. 
C)  F-distribution. 
D)  mean distribution. 
E)  Standard normal distribution. 
A)  normal distribution. 
B)  chi-square distribution. 
C)  F-distribution. 
D)  mean distribution. 
E)  Standard normal distribution.

Question 18

If a researcher takes enough samples, the data will begin to approach a normal distribution.

Accepted Answer

A) True 
 B)False

Question 19

Determining sample size for probability samples involves managerial, financial, and statistical considerations.

Accepted Answer

A) True 
 B)False

Question 20

Which of the following is not a measure of central tendency?

Accepted Answer

A)  variance 
B)  mean 
C)  median 
D)  mode 
A)  variance 
B)  mean 
C)  median 
D)  mode

The true population can only be found in the estimate range of values.

A researcher wants to estimate a population mean. The level of tolerable sampling error is 0.2 of a purchase occasion, with a confidence level of 95.44%. If the estimated population variance is 5 for the most important question in the study, what is the desired sample size?

How can a researcher estimate the population standard deviation before selecting the sample?

The finite population correction factor (FPC) is an adjustment to the required sample size that is made in cases where the sample is expected to be equal to 5 percent or more of the total population.

The "budget available" approach forces the researcher to explore alternative data-collection approaches and to carefully consider the value of information in relation to cost.

A type I error concludes that there is no difference when there is a difference.

___________ sampling error is the amount of sampling error the researcher is willing to accept.

Which of the following would increase the necessary sample size in a study?

About 68% of the area under a standard normal curve covers one _________.

You wish to complete 300 phone interviews. Using a random-digit sample, you can expect your working phone rate will be only about 60 percent. How many calls will you likely have to make to achieve your desired interviews?

A researcher has been asked to determine if offering a discount drink during happy hour to those who purchase a drink in the morning increases the likelihood of their return in the afternoon, what statistic would he or she be most interested in?

Prior survey results can help a researcher estimate population standard deviation.

Subgroups are often chosen based on demographics of the sample, such as gender, income, etc.

The greater the number of subgroups to be analyzed, the smaller the necessary sample size.

A type II error concludes that there is no difference when there is a difference.

Population size is the most important determinant of effective sample size.

A normal distribution with a mean of zero and a standard deviation of one is a __________.

If a researcher takes enough samples, the data will begin to approach a normal distribution.

Determining sample size for probability samples involves managerial, financial, and statistical considerations.

Which of the following is not a measure of central tendency?

Problem Definition and the Research Process

Secondary Data and Databases

Qualitative Research

Traditional Survey Research

Online Marketing Research

Primary Data Collection: Observation

Primary Data Collection: Experimentation and Test Markets

The Concept of Measurement and Attitude Scales

Questionnaire Design

Basic Sampling Issues

Data Processing, Data Analysis, and Statistical Testing

More Powerful Statistical Methods

Communicating Results and Managing Marketing Research

Filters

Exam 12: Sample Size Determination

The true population can only be found in the estimate range of values.

A researcher wants to estimate a population mean. The level of tolerable sampling error is 0.2 of a purchase occasion, with a confidence level of 95.44%. If the estimated population variance is 5 for the most important question in the study, what is the desired sample size?

How can a researcher estimate the population standard deviation before selecting the sample?

The finite population correction factor (FPC) is an adjustment to the required sample size that is made in cases where the sample is expected to be equal to 5 percent or more of the total population.

The "budget available" approach forces the researcher to explore alternative data-collection approaches and to carefully consider the value of information in relation to cost.

A type I error concludes that there is no difference when there is a difference.

___________ sampling error is the amount of sampling error the researcher is willing to accept.

Which of the following would increase the necessary sample size in a study?

About 68% of the area under a standard normal curve covers one _________.

You wish to complete 300 phone interviews. Using a random-digit sample, you can expect your working phone rate will be only about 60 percent. How many calls will you likely have to make to achieve your desired interviews?

A researcher has been asked to determine if offering a discount drink during happy hour to those who purchase a drink in the morning increases the likelihood of their return in the afternoon, what statistic would he or she be most interested in?

Prior survey results can help a researcher estimate population standard deviation.

Subgroups are often chosen based on demographics of the sample, such as gender, income, etc.

The greater the number of subgroups to be analyzed, the smaller the necessary sample size.

A type II error concludes that there is no difference when there is a difference.

Population size is the most important determinant of effective sample size.

A normal distribution with a mean of zero and a standard deviation of one is a __________.

If a researcher takes enough samples, the data will begin to approach a normal distribution.

Determining sample size for probability samples involves managerial, financial, and statistical considerations.

Which of the following is not a measure of central tendency?

Problem Definition and the Research Process

Secondary Data and Databases

Qualitative Research

Traditional Survey Research

Online Marketing Research

Primary Data Collection: Observation

Primary Data Collection: Experimentation and Test Markets

The Concept of Measurement and Attitude Scales

Questionnaire Design

Basic Sampling Issues

Data Processing, Data Analysis, and Statistical Testing

More Powerful Statistical Methods

Communicating Results and Managing Marketing Research

Filters