« previous next »

Author Question: Random digit dialing is a sampling techniques that was developed in order to _____. a. obtain ... (Read 139 times)

TVarnum

  • Hero Member
  • *****
  • Posts: 548
on: Jun 19, 2018
Random digit dialing is a sampling techniques that was developed in order to _____.
 
  a. obtain random samples c. check internal validity
  b. obtain matched samples d. check external validity

Question 2

In order to estimate the ratio of white to black students in his college, a professor determines the proportion of whites and blacks in his class. The resulting proportion is called a _________.
 
  a. population c. parameter
  b. sample d. statistic


aham8f

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 19, 2018
Answer to Question 1

A
Random digit dialing is used in order to obtain random samples. The last four digits of a phone number are dialed randomly, thereby making it equally likely that any one number with a certain exchange will be dialed.

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.

Did you know?

The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

Did you know?

Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Specimen collection techniques Specimen collection techniques
Human infants are like all other placental mammals, except they are born at a less developed state. Human infants are like all other placental mammals, except they are born at a less developed state.
In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism In 1839 Mary Cragin, at the age of twenty-nine, became a convert to John Humphrey Noyes’s “communism
Performing Transmission-Based Precaution: Isolation Techniques Performing Transmission-Based Precaution: Isolation Techniques
viable surface sampling using contact plates viable surface sampling using contact plates
The chorionic villus sampling technique. (a) A catheter is inserted into the uterus through the vagi The chorionic villus sampling technique. (a) A catheter is inserted into the uterus through the vagi
Video: Chemical Messengers Animation

For a complete list of videos, visit our video library