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

Author Question: Given a sample correlation r = -0.5 and a sample size of n = 30, the test statistic for testing ... (Read 125 times)

luminitza

  • Hero Member
  • *****
  • Posts: 555
Given a sample correlation r = -0.5 and a sample size of n = 30, the test statistic for testing whether the two variables are significantly correlated is approximately t = -3.055.
 
  Indicate whether the statement is true or false

Question 2

A cell phone company wants to determine if the use of text messaging is independent of age. The follow data has been collected from a random sample of their customers.
 
  Regularly use text messaging Do not regularly use text messaging
  Under 21 82 38
  21-39 57 34
  40 and over 6 83
 
  Using the data above, in order to test for the independence of age and the use of text messaging, the expected value for the under 21 and regularly use text messaging cell is 82.
   Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Smiles0805

  • Sr. Member
  • ****
  • Posts: 305
Answer to Question 1

TRUE

Answer to Question 2

FALSE




luminitza

  • Member
  • Posts: 555
Reply 2 on: Jun 24, 2018
Excellent


peter

  • Member
  • Posts: 330
Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

Did you know?

Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.

For a complete list of videos, visit our video library