Author Question: Attempts to recontact individuals selected for a sample who were not available initially are known ... (Read 118 times)

fbq8i

  • Hero Member
  • *****
  • Posts: 527
Attempts to recontact individuals selected for a sample who were not available initially are known as _____.
 a. callbacks
  b. rebounds
  c. recontacts
  d. tracers

Question 2

Suppose that you used a 9-point rating scale and that you wanted to compare men who had an annual income over 50,000 (Group 1) with men who had an annual income less than or equal to 50,000 (Group 2) on their liking of a new product. If you studied 40 men in Group 1 and they have a mean of 7 and a standard deviation of 2.5, while the 35 men in Group 2 have a mean of 5 and a standard deviation of 1.4, what is the approximate value of t using the t-test?
 a. 3.43
  b. 4.19
  c. 2.64
  d. not enough information to determine



bbburns21

  • Sr. Member
  • ****
  • Posts: 336
Answer to Question 1

A

Answer to Question 2

B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question


 

Did you know?

To prove that stomach ulcers were caused by bacteria and not by stress, a researcher consumed an entire laboratory beaker full of bacterial culture. After this, he did indeed develop stomach ulcers, and won the Nobel Prize for his discovery.

Did you know?

About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Did you know?

A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.

Did you know?

More than 4.4billion prescriptions were dispensed within the United States in 2016.

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

For a complete list of videos, visit our video library