This topic contains a solution. Click here to go to the answer

Author Question: Suppose a group of students who reported smoking marijuana was found to have lower test scores than ... (Read 87 times)

Coya19@aol.com

  • Hero Member
  • *****
  • Posts: 601
Suppose a group of students who reported smoking marijuana was found to have lower test scores than a group of students who reported they don't smoke marijuana. What is the most that can be concluded with regard to the population of all students?
 a. Smoking marijuana causes lower test scores.
  b. Smoking marijuana may be related to lower test scores.
  c. Students who smoke marijuana have lower test scores than students who don't.
  d. None of the above.

Question 2

Why is it important to know how the individuals or objects in a study were selected?
 a. It is important to know to whom the results can be extended.
  b. It is important for determining whether or not there is bias in the results.
  c. Both a) and b) are true.
  d. It is not important to know how the individuals were selected; only the size of the sample matters.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksanderson1296

  • Sr. Member
  • ****
  • Posts: 339
Answer to Question 1

B

Answer to Question 2

C




Coya19@aol.com

  • Member
  • Posts: 601
Reply 2 on: Jul 24, 2018
:D TYSM


sultansheikh

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Critical care patients are twice as likely to receive the wrong medication. Of these errors, 20% are life-threatening, and 42% require additional life-sustaining treatments.

For a complete list of videos, visit our video library