Question 1 (1.33 points)     Saved             Taking an...

Question 1 (1.33 points)

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Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each classmate, arrange for them to use the herbal extract for 5 days, and then weigh them again. You are interested in how much weight has been lost.

What are the individuals in this study?

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Question 2 (1.33 points)

Saved

Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each classmate, arrange for them to use the herbal extract for 5 days, and then weigh them again. You are interested in how much weight has been lost.

How many variables are there in this study?

Question 2 options:

Question 3 (1.33 points)

Saved

Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each classmate, arrange for them to use the herbal extract for 5 days, and then weigh them again. You are interested in how much weight has been lost.

What is the explanatory variable in this study?

Question 3 options:

Question 4 (1.33 points)

Saved

Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each classmate, arrange for them to use the herbal extract for 5 days, and then weigh them again. You are interested in how much weight has been lost.

What is the response variable in this study?

Question 4 options:

Question 5 (1.33 points)

Saved

Taking an herbal extract allegedly allows you to lose 5 pounds in 5 days. You decide to test this by enlisting 12 classmates. You weigh each classmate, arrange for them to use the herbal extract for 5 days, and then weigh them again. You are interested in how much weight has been lost.

Which design best describes this study?

Question 5 options:

Question 6 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

Which is the explanatory variable in this example?

Question 6 options:

Question 7 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

Is the explanatory variable ________________ ?

Question 7 options:

Question 8 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

Which is the response variable in this example?

Question 8 options:

Question 9 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

Is the response variable ________________ ?

Question 9 options:

Question 10 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

Which design best describes this study?

Question 10 options:

Question 11 (1.33 points)

A paleontologist studying Ordovician fossils collected four samples of the trilobite Pradoxides (members of an extinct subphylum of arthropods) from the same rock strata, but from different locations. He measured the cephalon length (in mm) of all specimens and recorded the data.

This study is ___________________.

Question 11 options:

Question 12 (1.33 points)

A student undertakes a project to determine the effect of carbon dioxide on respiration rate. A volunteer inhaled air from a bag containing a predetermined amount of carbon dioxide (with partial pressure measured in torr) and the number of breaths per minute was recorded. This was repeated by the same volunteer with 10 different partial pressures of carbon dioxide.

Which is the explanatory variable in this study?

Question 12 options:

Question 13 (1.33 points)

A student undertakes a project to determine the effect of carbon dioxide on respiration rate. A volunteer inhaled air from a bag containing a predetermined amount of carbon dioxide (with partial pressure measured in torr) and the number of breaths per minute was recorded. This was repeated by the same volunteer with 10 different partial pressures of carbon dioxide.

The response variable is

Question 13 options:

Question 14 (1.33 points)

A student undertakes a project to determine the effect of carbon dioxide on respiration rate. A volunteer inhaled air from a bag containing a predetermined amount of carbon dioxide (with partial pressure measured in torr) and the number of breaths per minute was recorded. This was repeated by the same volunteer with 10 different partial pressures of carbon dioxide.

This study is ___________________.

Question 14 options:

Question 15 (1.38 points)

A student undertakes a project to determine the effect of carbon dioxide on respiration rate. A volunteer inhaled air from a bag containing a predetermined amount of carbon dioxide (with partial pressure measured in torr) and the number of breaths per minute was recorded. This was repeated by the same volunteer with 10 different partial pressures of carbon dioxide.

Which design best describes this study?

Question 15 options: