Question 1

Soft Drink: A soft drink manufacturer has been supplying its products in bottles to grocery stores and in cans to small convenience stores. The company is analyzing sales of this product to determine which type of packaging is preferred by customers.
-Is this study observational or experimental? Explain.

Accepted Answer

The answer of Soft Drink: A soft drink manufacturer has...

Question 2

Pollsters want to know what percentage of all registered voters in Missoula, Montana, intend to vote in the next election. They visit with 350 people at the downtown shopping mall during one afternoon and ask each person whether or not they intend to vote. Are the target population and the sampled population the same in this case? Explain.

Accepted Answer

The answer of Pollsters want to know what percentage of...

Question 3

List one advantage and one disadvantage of a personal interview as a method of data collection.

Accepted Answer

The answer of List one advantage and one disadvantage of...

Question 4

Briefly describe three types of nonsampling errors.

Accepted Answer

The answer of Briefly describe three types of nonsampling errors....

Question 5

A(n) ____________________ sample is obtained by separating the population into groups and taking a simple random sample from each group.

Accepted Answer

The answer of A(n) ____________________ sample is obtained by separating...

Question 6

Soft Drink: A soft drink manufacturer has been supplying its products in bottles to grocery stores and in cans to small convenience stores. The company is analyzing sales of this product to determine which type of packaging is preferred by customers.
-Outline a better method for designing this study, so the same types of stores don't get the same types of packaging.

Accepted Answer

The answer of Soft Drink: A soft drink manufacturer has...

Question 7

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks
-Briefly describe how the researcher might design an observational study to investigate the relationship between smoking and heart attacks

Accepted Answer

The answer of Smoking and Heart Attacks: A medical researcher...

Question 8

What is meant by a self-selected sample? Why are self-selected samples not desirable?

Accepted Answer

The answer of What is meant by a self-selected sample?...

Question 9

____________________ error is due to mistakes made in the acquisition of data.

Accepted Answer

The answer of ____________________ error is due to mistakes made...

Question 10

Discuss one advantage and one disadvantage of a self-administered survey as a method of data collection.

Accepted Answer

The answer of Discuss one advantage and one disadvantage of...

Question 11

Give an example of a poll that involves a self-selected sample.

Accepted Answer

The answer of Give an example of a poll that...

Question 12

Briefly discuss three methods of conducting a survey of people.

Accepted Answer

The answer of Briefly discuss three methods of conducting a...

Question 13

Give three important points to consider when designing a questionnaire.

Accepted Answer

The answer of Give three important points to consider when...

Question 14

____________________ sampling is particularly useful when it is difficult or costly to develop a complete list of the population members.

Accepted Answer

The answer of ____________________ sampling is particularly useful when it...

Question 15

List one advantage and one disadvantage of a telephone interview as a method of data collection.

Accepted Answer

The answer of List one advantage and one disadvantage of...

Question 16

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks
-How can you show that smoking causes heart attacks without being able to do a designed experiment?

Accepted Answer

The answer of Smoking and Heart Attacks: A medical researcher...

Question 17

The Chairman of a College of Business with five departments wants to estimate the average number of student-hours lost per month due to illness of their professors. Describe a sampling plan that will help the Dean compare the average student-loss hours for the five departments.

Accepted Answer

The answer of The Chairman of a College of Business...

Question 18

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks
-What type of studies are plausible in this particular scenario, observational studies or experiments?

Accepted Answer

The answer of Smoking and Heart Attacks: A medical researcher...

Question 19

Describe the difference between an observational study and an experimental study.

Accepted Answer

The answer of Describe the difference between an observational study...

Question 20

A senator wants to estimate the mean age of registered voters in her state. Unfortunately, she does not have a complete list of households in her state. Describe a sampling plan that would be suitable for her purposes.

Accepted Answer

The answer of A senator wants to estimate the mean...

Quiz 4: Data Collection and Sampling

List one advantage and one disadvantage of a personal interview as a method of data collection.

Briefly describe three types of nonsampling errors.

A(n) ____________________ sample is obtained by separating the population into groups and taking a simple random sample from each group.

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks -Briefly describe how the researcher might design an observational study to investigate the relationship between smoking and heart attacks

What is meant by a self-selected sample? Why are self-selected samples not desirable?

____________________ error is due to mistakes made in the acquisition of data.

Discuss one advantage and one disadvantage of a self-administered survey as a method of data collection.

Give an example of a poll that involves a self-selected sample.

Briefly discuss three methods of conducting a survey of people.

Give three important points to consider when designing a questionnaire.

____________________ sampling is particularly useful when it is difficult or costly to develop a complete list of the population members.

List one advantage and one disadvantage of a telephone interview as a method of data collection.

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks -How can you show that smoking causes heart attacks without being able to do a designed experiment?

The Chairman of a College of Business with five departments wants to estimate the average number of student-hours lost per month due to illness of their professors. Describe a sampling plan that will help the Dean compare the average student-loss hours for the five departments.

Smoking and Heart Attacks: A medical researcher is interested in investigating the relationship between smoking and heart attacks -What type of studies are plausible in this particular scenario, observational studies or experiments?

Describe the difference between an observational study and an experimental study.

A senator wants to estimate the mean age of registered voters in her state. Unfortunately, she does not have a complete list of households in her state. Describe a sampling plan that would be suitable for her purposes.