Question 1

Which of the following sampling plans does NOT require determining the necessary sample size before collecting data?

Accepted Answer

A) Quota sample 
B) Stratified sample 
C) Sequential sample 
D) Simple random sample 
E) All sampling plans require prior determination of sample size. 
A) Quota sample 
B) Stratified sample 
C) Sequential sample 
D) Simple random sample 
E) All sampling plans require prior determination of sample size. C

Question 2

"Cyberchondriacs" is a term used for people who have looked online for health information.

Accepted Answer

A) True 
 B)False  True

Question 3

When using anticipated cross classifications to determine sample size,the general "rule of thumb" suggests using at least ____ units in major breakdowns and ____ units in minor breakdowns.

Accepted Answer

A) 150,20 to 50 
B) 50,10 to 20 
C) 75,100 
D) 200,75 
E) 100,20 to 50 
A) 150,20 to 50 
B) 50,10 to 20 
C) 75,100 
D) 200,75 
E) 100,20 to 50 E

Question 4

A researcher determined the size sample necessary to estimate two population means Y and Z.The indicated sizes were 200 to estimate Y and 300 to estimate Z with the specified degrees of confidence and precision.The researcher decided therefore to use a sample of size 250.Assuming the estimates of the population standard deviation were correct

Accepted Answer

A) the estimate of Y is more precise than desired while that for Z is less precise than desired. 
B) the estimate of Y is less precise than desired while that for Z is more precise than desired. 
C) Y is estimated with exactly the specified degree of precision while Z is estimated less precisely than desired. 
D) Z is estimated with exactly the specified degree of precision while Y is estimated less precisely than desired. 
E) Both Y and Z are estimated with the exact specified degree of precision. 
A) the estimate of Y is more precise than desired while that for Z is less precise than desired. 
B) the estimate of Y is less precise than desired while that for Z is more precise than desired. 
C) Y is estimated with exactly the specified degree of precision while Z is estimated less precisely than desired. 
D) Z is estimated with exactly the specified degree of precision while Y is estimated less precisely than desired. 
E) Both Y and Z are estimated with the exact specified degree of precision.

Question 5

A researcher is attempting to determine the average annual expenditures per household on albums.Suppose $300 was considered the upper limit and $0 the lower limit.There are no past studies on which to base an estimate of s.What is your best estimate of the standard deviation?

Accepted Answer

A) $0 
B) $50 
C) $150 
D) $300 
E) No way to determine. 
A) $0 
B) $50 
C) $150 
D) $300 
E) No way to determine.

Question 6

Exhibit 16.2 A researcher wishes to estimate the average annual expenditures per household on gasoline.The estimate must be accurate within plus or minus $50 and the estimated standard deviation for such expenditures is $400.
Refer to Exhibit 16.2.Given estimates and specifications that the population standard deviation is $200,TOTAL precision is $100 and the researcher wishes to be 95% confident in the result,the required sample size is

Accepted Answer

A) 42. 
B) 32. 
C) 16. 
D) 64. 
E) Not enough information given. 
A) 42. 
B) 32. 
C) 16. 
D) 64. 
E) Not enough information given.

Question 7

If the sample standard deviation turns out to be larger than the estimated population standard deviation,the confidence interval to estimate a population mean will be ____ planned.

Accepted Answer

A) Narrower than 
B) Wider than 
C) The same as 
D) As precise as 
E) None of the above 
A) Narrower than 
B) Wider than 
C) The same as 
D) As precise as 
E) None of the above

Question 8

A researcher estimated an unknown population standard deviation to be 150.Using a sample of size n = 135,the sample standard deviation was found to be 100.The researcher now wishes to establish a 95% confidence interval for the population mean.Which of the following is the correct standard error of the mean to use in calculating the desired confidence interval?

Accepted Answer

A) Can't be determined from the information given. 
B) 1.05 
C) 12.91 
D) 0.86 
E) 8.61 
A) Can't be determined from the information given. 
B) 1.05 
C) 12.91 
D) 0.86 
E) 8.61

Question 9

The degree of homogeneity in the population,on the characteristic to be estimated,directly influences sample size.

Accepted Answer

A) True 
 B)False

Question 10

Exhibit 16.3 Stella would like to determine the amount of the average purchase at her software store with a total precision of $10,a historical average purchase variance of $150,and at a 95% confidence level.
Refer to Exhibit 16.3.What sample size does Stella need?

Accepted Answer

A) 2 
B) 12 
C) 24 
D) 30 
E) 8 
A) 2 
B) 12 
C) 24 
D) 30 
E) 8

Question 11

A study is to be performed for a local restaurant.The owner wants to know the awareness of the restaurant name as well as satisfaction with food,service,and prices.Furthermore,he wants to know answers to the above issues by subgroups such as those who have eaten lunch meals,dinner meals,weekday patrons,and weekend patrons.Since the sample size formula cannot be used,the study should arbitrarily decide to sample 100 patrons per subgroup

Accepted Answer

A) True 
 B)False

Question 12

What three factors are needed to calculate sample size?

Accepted Answer

A) Variability,precision,and confidence. 
B) Variability,precision,and population size. 
C) Precision,confidence,and population size. 
D) Precision,population size,and costs. 
E) None of the above. 
A) Variability,precision,and confidence. 
B) Variability,precision,and population size. 
C) Precision,confidence,and population size. 
D) Precision,population size,and costs. 
E) None of the above.

Question 13

Exhibit 16.1   Refer to Exhibit 16.1.Which of these factors does one need to consider when estimating sample size?

Accepted Answer

A) 1,2 
B) 2,3 
C) 1,2,3 
D) 2,3,4 
E) 1,2,3,4 
A) 1,2 
B) 2,3 
C) 1,2,3 
D) 2,3,4 
E) 1,2,3,4

Question 14

____________________ is the degree to which one can feel confident that an estimate approximates the true value.

Accepted Answer

The answer of ____________________ is the degree to which one...

Question 15

Exhibit 16.5 A researcher wished to estimate the proportion of all families who go to the movies at least once a month.He wished the estimate to be accurate within plus or minus 4 percentage points and further desired a 95 percent confidence interval (z = 2)around the result.Additionally,he estimates the population proportion as 0.30.
Refer to Exhibit 16.5.Suppose that a 99 percent confidence interval (z = 3)were desired.The required sample size is

Accepted Answer

A) 54. 
B) 450. 
C) 1381. 
D) 1181. 
E) 1000. 
A) 54. 
B) 450. 
C) 1381. 
D) 1181. 
E) 1000.

Question 16

A researcher was conducting an investigation to determine if level of education affected a person's consumption of alcoholic beverages.The researcher was specifically interested in determining whether those with a grade school,high school,or college education were more likely to drink beer,wine,or hard liquor.To investigate the question the researcher planned to cross-classify these three education levels of respondents against their preferences for each of these beverages.She estimated that 20 percent of the population of interest had a college education,70 percent a high school education,and 10 percent only a grade school education,and further that 40 percent of the population preferred beer,40 percent wine,and 20 percent hard liquor.She desired a minimum of 20 observations per cell on which to base percentages.How large a sample should she select?

Accepted Answer

A) 200 
B) 250 
C) 400 
D) 500 
E) 100 
A) 200 
B) 250 
C) 400 
D) 500 
E) 100

Question 17

The size of the sample required to estimate a population mean is ____ proportional to the ____ of the characteristic in the population.

Accepted Answer

A) directly,variability 
B) inversely,variability 
C) inversely,size 
D) directly,size 
E) uniformly,size 
A) directly,variability 
B) inversely,variability 
C) inversely,size 
D) directly,size 
E) uniformly,size

Question 18

Choosing a sample of size n at random is statistically equivalent to first identifying all possible samples of size n in the population and then picking one of these samples randomly.

Accepted Answer

A) True 
 B)False

Question 19

The normal distribution most closely approximates the binomial when ____ and ____.

Accepted Answer

A) the sample is small,population proportion is small 
B) the sample is large,population proportion is small 
C) the sample is large,population proportion is close to 0.5 
D) sample is greater than 5,population proportion is close to 0.9 
E) the sample is greater than 30 but less than 100,the population proportion is close to 0.1 
A) the sample is small,population proportion is small 
B) the sample is large,population proportion is small 
C) the sample is large,population proportion is close to 0.5 
D) sample is greater than 5,population proportion is close to 0.9 
E) the sample is greater than 30 but less than 100,the population proportion is close to 0.1

Question 20

If the estimated range of incomes for 30 medium size businesses is $60,000,a rough estimate of one standard deviation would be

Accepted Answer

A) $10,000. 
B) $12,000. 
C) $8,000. 
D) $8,500. 
E) $9,000. 
A) $10,000. 
B) $12,000. 
C) $8,000. 
D) $8,500. 
E) $9,000.

Which of the following sampling plans does NOT require determining the necessary sample size before collecting data?

"Cyberchondriacs" is a term used for people who have looked online for health information.

When using anticipated cross classifications to determine sample size,the general "rule of thumb" suggests using at least units in major breakdowns and units in minor breakdowns.

A researcher is attempting to determine the average annual expenditures per household on albums.Suppose $300 was considered the upper limit and $0 the lower limit.There are no past studies on which to base an estimate of s.What is your best estimate of the standard deviation?

If the sample standard deviation turns out to be larger than the estimated population standard deviation,the confidence interval to estimate a population mean will be ____ planned.

The degree of homogeneity in the population,on the characteristic to be estimated,directly influences sample size.

Exhibit 16.3 Stella would like to determine the amount of the average purchase at her software store with a total precision of $10,a historical average purchase variance of $150,and at a 95% confidence level. Refer to Exhibit 16.3.What sample size does Stella need?

What three factors are needed to calculate sample size?

Exhibit 16.1 Refer to Exhibit 16.1.Which of these factors does one need to consider when estimating sample size?

____________________ is the degree to which one can feel confident that an estimate approximates the true value.

The size of the sample required to estimate a population mean is proportional to the of the characteristic in the population.

Choosing a sample of size n at random is statistically equivalent to first identifying all possible samples of size n in the population and then picking one of these samples randomly.

The normal distribution most closely approximates the binomial when and .

If the estimated range of incomes for 30 medium size businesses is $60,000,a rough estimate of one standard deviation would be

The Role of Marketing Research

Gathering Marketing Intelligence: The Systems Approach

Gathering Marketing Intelligence: The Project Approach

Problem Formulation

Types of Research Design and Exploratory Research

Descriptive and Causal Research Designs

Secondary Data

Standardized Marketing Information Services

Collecting Primary Data

Collecting Information by Communication

Collecting Information by Observation

Asking Good Questions: Measurement Basics

Measuring Attitudes and Other Variables

Designing the Questionnaire or Observation Form

Developing the Sampling Plan

Collecting the Data: Nonsampling Errors and Response Rate Calculation

Data Analysis: Preliminary Steps

Data Analysis: Analyzing Individual Variables and Basics of Hypothesis Testing

Data Analysis: Analyzing Multiple Variables Simultaneously

The Research Report

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Exam 16: Determining Sample Size

Which of the following sampling plans does NOT require determining the necessary sample size before collecting data?

"Cyberchondriacs" is a term used for people who have looked online for health information.

When using anticipated cross classifications to determine sample size,the general "rule of thumb" suggests using at least ____ units in major breakdowns and ____ units in minor breakdowns.

A researcher is attempting to determine the average annual expenditures per household on albums.Suppose $300 was considered the upper limit and $0 the lower limit.There are no past studies on which to base an estimate of s.What is your best estimate of the standard deviation?

If the sample standard deviation turns out to be larger than the estimated population standard deviation,the confidence interval to estimate a population mean will be ____ planned.

The degree of homogeneity in the population,on the characteristic to be estimated,directly influences sample size.

Exhibit 16.3 Stella would like to determine the amount of the average purchase at her software store with a total precision of $10,a historical average purchase variance of $150,and at a 95% confidence level. Refer to Exhibit 16.3.What sample size does Stella need?

What three factors are needed to calculate sample size?

Exhibit 16.1 Refer to Exhibit 16.1.Which of these factors does one need to consider when estimating sample size?

____________________ is the degree to which one can feel confident that an estimate approximates the true value.

The size of the sample required to estimate a population mean is ____ proportional to the ____ of the characteristic in the population.

Choosing a sample of size n at random is statistically equivalent to first identifying all possible samples of size n in the population and then picking one of these samples randomly.

The normal distribution most closely approximates the binomial when ____ and ____.

If the estimated range of incomes for 30 medium size businesses is $60,000,a rough estimate of one standard deviation would be

The Role of Marketing Research

Gathering Marketing Intelligence: The Systems Approach

Gathering Marketing Intelligence: The Project Approach

Problem Formulation

Types of Research Design and Exploratory Research

Descriptive and Causal Research Designs

Secondary Data

Standardized Marketing Information Services

Collecting Primary Data

Collecting Information by Communication

Collecting Information by Observation

Asking Good Questions: Measurement Basics

Measuring Attitudes and Other Variables

Designing the Questionnaire or Observation Form

Developing the Sampling Plan

Collecting the Data: Nonsampling Errors and Response Rate Calculation

Data Analysis: Preliminary Steps

Data Analysis: Analyzing Individual Variables and Basics of Hypothesis Testing

Data Analysis: Analyzing Multiple Variables Simultaneously

The Research Report

Filters

When using anticipated cross classifications to determine sample size,the general "rule of thumb" suggests using at least units in major breakdowns and units in minor breakdowns.

The size of the sample required to estimate a population mean is proportional to the of the characteristic in the population.

The normal distribution most closely approximates the binomial when and .