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 86 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
YES! Correct, THANKS for helping me on my review


bitingbit

  • Member
  • Posts: 323
Reply 3 on: Yesterday
:D TYSM

 

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

Did you know?

The Centers for Disease Control and Prevention has released reports detailing the deaths of infants (younger than 1 year of age) who died after being given cold and cough medications. This underscores the importance of educating parents that children younger than 2 years of age should never be given over-the-counter cold and cough medications without consulting their physicians.

Did you know?

The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

For a complete list of videos, visit our video library