Question 1

In a normal distribution,the mean,median,and mode are equal.

Accepted Answer

A) True 
 B)False  True

Question 2

___________ 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 D

Question 3

The total area under a normal curve is not equal to one,meaning all observations.

Accepted Answer

A) True 
 B)False  False

Question 4

Holding constant at a 95% level of confidence,if the standard deviation increases,then the sample size required to represent the population in question will be _______.

Accepted Answer

A) larger 
B) about the same 
C) smaller 
D) not applicable 
A) larger 
B) about the same 
C) smaller 
D) not applicable

Question 5

Compute the required sample size given the required confidence in the sample results is 90%.The level of tolerable sampling error is 1% and the estimated population standard deviation is 5.

Accepted Answer

The required sample size given

Question 6

A continuous distribution,which is bell-shaped and symmetric about the mean,is known as:

Accepted Answer

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

Question 7

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the past 30 days,with a tolerable sampling error (E)of 0.03 and a confidence level of 97.5%.If secondary data indicated that 25% of all adults had used the Internet for such a purpose,what is the sample size?

Accepted Answer

1)at 97.5% confidence,Z = 2.24

Question 8

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 9

As the level of tolerable error increases in the sample means formula,the sample size required to represent a particular population is:

Accepted Answer

A) smaller. 
B) larger. 
C) about the same. 
D) none of the above 
A) smaller. 
B) larger. 
C) about the same. 
D) none of the above

Question 10

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

Question 11

Statistical power is the probability of making a type II error.

Accepted Answer

A) True 
 B)False

Question 12

14.	Which of the following are not required to determine sample size using the sample means formula?

Accepted Answer

A) 	the standard error of the mean 
B) 	desired level of confidence 
C) 	   	estimate of population standard  deviation 
D) 	  	level of tolerable error 
E) 	      All of the above are required. 
A) 	the standard error of the mean 
B) 	desired level of confidence 
C) 	   	estimate of population standard  deviation 
D) 	  	level of tolerable error 
E) 	      All of the above are required.

Question 13

The idea that a large number of sample means or proportions will approximate a normal distribution,regardless of the distribution of the population from which they were drawn,is known as:

Accepted Answer

A) sample variance. 
B) population variance. 
C) central limit theorem. 
D) random error. 
E) none of the above 
A) sample variance. 
B) population variance. 
C) central limit theorem. 
D) random error. 
E) none of the above

Question 14

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 15

Higher levels of confidence generally require:

Accepted Answer

A) larger sample sizes. 
B) greater variance. 
C) smaller sample sizes. 
D) smaller standard deviation. 
A) larger sample sizes. 
B) greater variance. 
C) smaller sample sizes. 
D) smaller standard deviation.

Question 16

A range of values with which the true population value is estimated to fall is known as the point estimate.

Accepted Answer

A) True 
 B)False

Question 17

Budget is rarely a consideration when determining sample size.

Accepted Answer

A) True 
 B)False

Question 18

Assuming the research objectives of the study can be accomplished,researchers would much prefer to estimate the required sample size using the sample proportion formula rather than the sample means formula.Why?

Accepted Answer

The sample means formula requires that t

Question 19

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 20

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

Exam 14: A: Sample Size Determination

In a normal distribution,the mean,median,and mode are equal.

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

The total area under a normal curve is not equal to one,meaning all observations.

Holding constant at a 95% level of confidence,if the standard deviation increases,then the sample size required to represent the population in question will be _______.

Compute the required sample size given the required confidence in the sample results is 90%.The level of tolerable sampling error is 1% and the estimated population standard deviation is 5.

A continuous distribution,which is bell-shaped and symmetric about the mean,is known as:

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

As the level of tolerable error increases in the sample means formula,the sample size required to represent a particular population is:

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

Statistical power is the probability of making a type II error.

14. Which of the following are not required to determine sample size using the sample means formula?

The idea that a large number of sample means or proportions will approximate a normal distribution,regardless of the distribution of the population from which they were drawn,is known as:

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.

Higher levels of confidence generally require:

A range of values with which the true population value is estimated to fall is known as the point estimate.

Budget is rarely a consideration when determining sample size.

Assuming the research objectives of the study can be accomplished,researchers would much prefer to estimate the required sample size using the sample proportion formula rather than the sample means formula.Why?

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 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?

The Role of Marketing Research in Management Decision Making

A: The Role of Marketing Research in Management Decision Making

The Marketing Research Industry and Research Ethics

A: The Marketing Research Industry and Research Ethics

Problem Definition,exploratory Research,and the Research Process

A: Problem Definition and the Research Process

Secondary Data and Databases

A: Secondary Data and Databases

Qualitative Research

A: Qualitative Research

Traditional Survey Research

A: Traditional Survey Research

Online Marketing Research

A: Online Marketing Research

Primary Data Collection: Observation

A: Primary Data Collection: Observation

Primary Data Collection: Experimentation and Test Markets

A: Primary Data Collection: Experimentation and Test Markets

The Concept of Measurement

A: The Concept of Measurement

Using Measurement Scales to Build Marketing Effectiveness

A: Using Measurement Scales to Build Marketing Effectiveness

Questionnaire Design

A: Questionnaire Design

Basic Sampling Issues

A: Basic Sampling Issues

Sample Size Determination

Data Processing and Fundamental Data Analysis

A: Data Processing and Fundamental Data Analysis

Statistical Testing of Differences and Relationships

A: Statistical Testing of Differences and Relationships

Bivariate Correlation and Regression

A: Bivariate Correlation and Regression

Multivariate Data Analysis

A: Multivariate Data Analysis

Communicating the Research Results

A: Communicating the Research Results

Managing Marketing Research

A: Managing Marketing Research

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