Unit 7 Day 11 Ch. 9 & 10 Test Review

4

The best experiments are:
Hint, find four answers, even though the dot turns green if only 3 are chosen.

6

Placebos are used for:

Select all that apply.

4

The purpose of blinding is to:

4

The purpose of a placebo can also be to:

4

The purpose of randomization in experimental studies is to:

4

The purpose of blocking is to:

4

Where is randomization involved in the following:

4

After menopause some women take supplemental estrogen. There is concern that if these women also drink alcohol their estrogen levels will rise too high.

An experiment was performed to observe the effect of alcohol on estrogen levels in women.

12 volunteers who were receiving supplemental estrogen were randomly divided into 2 groups.
12 additional volunteers who were not receiving estrogen were also randomly divided into 2 groups.

In each case, one group drank an alcoholic beverage, the other non-alcoholic.

An hour later everyone’s estrogen level was measured. Only those on supplemental estrogen showed a marked increase.

How many factors are being studied/manipulated in this experiment?
What is/are the factor (s)?

4

After menopause some women take supplemental estrogen. There is concern that if these women also drink alcohol their estrogen levels will rise too high.

An experiment was performed to observe the effect of alcohol on estrogen levels in women.

12 volunteers who were receiving supplemental estrogen were randomly divided into 2 groups.
12 additional volunteers who were not receiving estrogen were also randomly divided into 2 groups.

In each case, one group drank an alcoholic beverage, the other non-alcoholic.

An hour later everyone’s estrogen level was measured. Only those on supplemental estrogen showed a marked increase.

How many levels/treatments are there of the factor?
What are they?

5

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.

How is randomization included in each of the sampling methods?

4

What kind of survey results should never be trusted due to bias?

4

We need to survey a random sample of the 300 passengers on a flight to San Francisco from San Antonio. Name each sampling method below:

4

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
What kind of a sample is this?

4

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
Was this a simple random sample?

4

The owner of a car dealership planned to develop strategies to increase sales. He hoped to learn the reasons why many people who visit his car lot do not eventually buy a car from him.
For one month he asked his sales staff to keep a list of the names and addresses of everyone who came in to test drive a car. At the end of the month he sent surveys to the people who did not buy the car, asking them why. About one third of them returned the survey, with 44% ofthem indicating that they found a lower price elsewhere.
Which are true?

4

Which statement(s) about bias is/are true?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

4

The City Council decides to conduct a telephone poll. Pollsters ask a carefully chosen random sample of adults this question:
'Do you favor the construction of a new prison to deal with the high level of violent crime in Texas?'

In what way might the proportion of 'yes' answers fail to accurately reflect true public opinion?
What kind of bias is this?

4

Which is important in the designing of a good experiment?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

4

Marketing researchers wonder if the color of a candy's packaging may influence sales of the candy. they manufacture test packages for chocolate mints in three colors (white, green, and silver).
The reseawrchers prepare three different packages, then market them for several weeks in convenience stores in various locations.
In this experiment what are the experimental units?

4

Marketing researchers wonder if the color of a candy's packaging may influence sales of the candy. they manufacture test packages for chocolate mints in three colors (white, green, and silver).
The researchers prepare three different packages, then market them for several weeks in convenience stores in various locations.
In this experiment what is/are the factor(s)?

4

Marketing researchers wonder if the color of a candy's packaging may influence sales of the candy. they manufacture test packages for chocolate mints in three colors (white, green, and silver).
The researchers prepare three different packages, then market them for several weeks in convenience stores in various locations.
In this experiment what is the response variable?

4

Marketing researchers wonder if the color of a candy's packaging may influence sales of the candy. they manufacture test packages for chocolate mints in three colors (white, green, and silver).
The researchers prepare three different packages, then market them for several weeks in convenience stores in various locations.
In this experiment what is/are the factor levels(treatments)?

4

An article in a local newspaper reported that dogs kept as pets tend to be overweight. Veterinarians say that a combination of both diet and exercise will help these chubby dogs get in shape.
The verterinarians propose three different diets and two different exercise programs:

Diet A: owners control the portions of dog food & dog treats
Diet B: A mixture of fresh vegetables with the regular dog food & substitute regular dog treats with baby carrots
Diet C: A mixture of fresh vegetables with low calorie dog food & substitute regular dog treats with baby carrots

Exercise Plan 1: three 30-minute walks a week
Exercise Plan 2: 20-minute walks daily

What is/are the factor(s) in this experimental study?

4

An article in a local newspaper reported that dogs kept as pets tend to be overweight. Veterinarians say that a combination of both diet and exercise will help these chubby dogs get in shape.
The verterinarians propose three different diets and two different exercise programs:

Diet A: owners control the portions of dog food & dog treats
Diet B: A mixture of fresh vegetables with the regular dog food & substitute regular dog treats with baby carrots
Diet C: A mixture of fresh vegetables with low calorie dog food & substitute regular dog treats with baby carrots

Exercise Plan 1: three 30-minute walks a week
Exercise Plan 2: 20-minute walks daily

How many levels are in this experimental study?

4

An article in a local newspaper reported that dogs kept as pets tend to be overweight. Veterinarians say that a combination of both diet and exercise will help these chubby dogs get in shape.
The verterinarians propose three different diets and two different exercise programs:

Diet A: owners control the portions of dog food & dog treats
Diet B: A mixture of fresh vegetables with the regular dog food & substitute regular dog treats with baby carrots
Diet C: A mixture of fresh vegetables with low calorie dog food & substitute regular dog treats with baby carrots

Exercise Plan 1: three 30-minute walks a week
Exercise Plan 2: 20-minute walks daily

How many treatment groups are in this experimental study?

4

An article in a local newspaper reported that dogs kept as pets tend to be overweight. Veterinarians say that a combination of both diet and exercise will help these chubby dogs get in shape.
The verterinarians propose three different diets and two different exercise programs:

Diet A: owners control the portions of dog food & dog treats
Diet B: A mixture of fresh vegetables with the regular dog food & substitute regular dog treats with baby carrots
Diet C: A mixture of fresh vegetables with low calorie dog food & substitute regular dog treats with baby carrots

Exercise Plan 1: three 30-minute walks a week
Exercise Plan 2: 20-minute walks daily

What are the subjects/experimental units in this experimental study?

4

An article in a local newspaper reported that dogs kept as pets tend to be overweight. Veterinarians say that a combination of both diet and exercise will help these chubby dogs get in shape.
The verterinarians propose three different diets and two different exercise programs:

Diet A: owners control the portions of dog food & dog treats
Diet B: A mixture of fresh vegetables with the regular dog food & substitute regular dog treats with baby carrots
Diet C: A mixture of fresh vegetables with low calorie dog food & substitute regular dog treats with baby carrots

Exercise Plan 1: three 30-minute walks a week
Exercise Plan 2: 20-minute walks daily

What is the response variable in this experimental study?

4

How could blocking be used in the above experiment?
Select all that apply.

4

How could blinding be used in the above experiment?
Select all that apply.

4

Unit 7 Day 11 Ch. 9 & 10 Test Review

The best experiments are:
Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:

Select all that apply.

The purpose of blinding is to:

The purpose of a placebo can also be to:

The purpose of randomization in experimental studies is to:

The purpose of blocking is to:

Where is randomization involved in the following:

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.

How is randomization included in each of the sampling methods?

What kind of survey results should never be trusted due to bias?

We need to survey a random sample of the 300 passengers on a flight to San Francisco from San Antonio. Name each sampling method below:

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
Was this a simple random sample?

Which statement(s) about bias is/are true?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?
Select all that apply.

How could blinding be used in the above experiment?
Select all that apply.

How would randomization be used in the above experiment?

The best experiments are:
Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:

Select all that apply.

The purpose of blinding is to:

The purpose of a placebo can also be to:

The purpose of randomization in experimental studies is to:

The purpose of blocking is to:

Where is randomization involved in the following:

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.

How is randomization included in each of the sampling methods?

What kind of survey results should never be trusted due to bias?

We need to survey a random sample of the 300 passengers on a flight to San Francisco from San Antonio. Name each sampling method below:

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
Was this a simple random sample?

Which statement(s) about bias is/are true?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?
Select all that apply.

How could blinding be used in the above experiment?
Select all that apply.

How would randomization be used in the above experiment?

Unit 7 Day 11 Ch. 9 & 10 Test Review

Unit 7 Day 11 Ch. 9 & 10 Test Review

The best experiments are:Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:Select all that apply.

The purpose of blinding is to:

The purpose of a placebo can also be to:

The purpose of randomization in experimental studies is to:

The purpose of blocking is to:

Where is randomization involved in the following:

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.How is randomization included in each of the sampling methods?

What kind of survey results should never be trusted due to bias?

We need to survey a random sample of the 300 passengers on a flight to San Francisco from San Antonio. Name each sampling method below:

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.Was this a simple random sample?

Which statement(s) about bias is/are true?Select all that apply:Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?Select all that apply:Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?Select all that apply.

How could blinding be used in the above experiment?Select all that apply.

How would randomization be used in the above experiment?

The best experiments are:Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:Select all that apply.

The purpose of blinding is to:

The purpose of a placebo can also be to:

The purpose of randomization in experimental studies is to:

The purpose of blocking is to:

Where is randomization involved in the following:

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.How is randomization included in each of the sampling methods?

What kind of survey results should never be trusted due to bias?

We need to survey a random sample of the 300 passengers on a flight to San Francisco from San Antonio. Name each sampling method below:

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.Was this a simple random sample?

Which statement(s) about bias is/are true?Select all that apply:Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?Select all that apply:Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?Select all that apply.

How could blinding be used in the above experiment?Select all that apply.

How would randomization be used in the above experiment?

The best experiments are:
Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:

Select all that apply.

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.

How is randomization included in each of the sampling methods?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
Was this a simple random sample?

Which statement(s) about bias is/are true?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?
Select all that apply.

How could blinding be used in the above experiment?
Select all that apply.

The best experiments are:
Hint, find four answers, even though the dot turns green if only 3 are chosen.

Placebos are used for:

Select all that apply.

Randomization in sample selection is very important in the collection of data to ensure the sample is representative of the population we are studying.

How is randomization included in each of the sampling methods?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
What kind of a sample is this?

A factory has 20 assembly lines producing a popular toy. To inspect a representative sample of 100 toys, quality control staff randomly selected 5 toys from each line's output.
Was this a simple random sample?

Which statement(s) about bias is/are true?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

Which is important in the designing of a good experiment?

Select all that apply:
Hint, there are 4, even though the dot turns green at 3.

How could blocking be used in the above experiment?
Select all that apply.

How could blinding be used in the above experiment?
Select all that apply.