Unit 4: Experiments Quiz 2 Review

Identify the vocabulary word:

An _______________________________ observes individuals and measures variables of interest, but does not attempt to influence the responses.

Tags

CCSS.HSS.IC.B.3

Identify the vocabulary word:

An ___________________________ deliberately imposes some treatment on individuals to measure their responses.

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.8.3

CCSS.RI.9-10.3

CCSS.RI.9-10.5

Identify the vocabulary word:

It is impossible to determine which variable is causing a change in the response variable

Tags

CCSS.RI.11-12.7

CCSS.RI.8.7

CCSS.RI.9-10.7

CCSS.RL.11-12.7

CCSS.RL.9-10.7

Identify the vocabulary word:

Used to provide a baseline for comparing the effects of the treatments

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.8.5

CCSS.RI.9-10.3

CCSS.RI.9-10.5

Identify the vocabulary word:

Subjects do not know if they are receiving the treatment

Tags

CCSS.RI.11-12.3

CCSS.RI.11-12.5

CCSS.RI.8.3

CCSS.RI.9-10.3

CCSS.RI.9-10.5

Identify the vocabulary word:

Treatment that has no active ingredient but is otherwise like other treatments

Tags

CCSS.RI.11-12.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

Which type of error is described below:

Finding convincing evidence for the alternative hypothesis, when in reality the null hypothesis is true

• Type I error

• Type II error

Which type of error is described below:

Not finding convincing evidence for the alternative hypothesis, when in reality the alternative hypothesis is true

• Type I error

• Type II error

Soo Young is an amateur archer and wants to improve. He reads an article online that describes a breathing technique that differs from his normal technique: take a deep breath before lifting the bow and slowly exhale until the shot is released. On a different 20 shots, he will try the new technique. Soo Young will determine the order of the shots at random and record whether or not each shot hit the target. Is there convincing evidence that Soo Young's ability to hit the target is greater with the new technique? The results are displayed in the two-way table.

What are the hypotheses Soo Young wants to test?

• Null: Soo Young has a greater ability to hit the target with the new breathing technique than with the normal breathing technique.

• Null: Soo Young has the same ability to hit the target with the new breathing technique and the normal breathing technique.

• Alternative: Soo Young has the same ability to hit the target with the new breathing technique and the normal breathing technique.

• Alternative: Soo Young has a greater ability to hit the target with the new breathing technique than with the normal breathing technique.

Soo Young is an amateur archer and wants to improve. He reads an article online that describes a breathing technique that differs from his normal technique: take a deep breath before lifting the bow and slowly exhale until the shot is released. On a different 20 shots, he will try the new technique. Soo Young will determine the order of the shots at random and record whether or not each shot hit the target. Is there convincing evidence that Soo Young's ability to hit the target is greater with the new technique? The results are displayed in the two-way table.

What is the evidence for the alternative hypothesis?

• When using the new breathing technique, Soo Young's hit percentage was 3 percentage points greater than when using his normal technique.

• When using the new breathing technique, Soo Young's hit percentage was 15 percentage points less than when using his normal technique.

• When using the new breathing technique, Soo Young's hit percentage was 15 percentage points greater than when using his normal technique.

• When using the new breathing technique, Soo Young's hit percentage was 3 percentage points less than when using his normal technique.

Tags

CCSS.7.SP.A.2