This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Dr. Smith was interested in whether there would be a reduction in the number of crimes in the ... (Read 15 times)

jc611

  • Hero Member
  • *****
  • Posts: 552
on: Aug 13, 2018
Dr. Smith was interested in whether there would be a reduction in the number of crimes in the central city once closed-circuit cameras went up and were monitored by police. To accomplish this study, Dr. Smith looked at the police records for the four-square-block area where the cameras were installed each week for six months. Dr. Smith was using what method?
 
  a. cohort design
  b. time-series design
  c. classical experiment
  d. quasi-experimental design

Question 2

External validity in an experimental design refers to:
 
  a. the researcher's ability to be sure that they are measuring what they think they are measuring
  b. the lack of concern with issues internal to the study
  c. the ability to apply findings to other populations
  d. the ability to know your measures are consistent


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mceravolo

  • Sr. Member
  • ****
  • Posts: 349
Reply #1 on: Aug 13, 2018
Answer to Question 1

b

Answer to Question 2

c


jc611

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Aug 13, 2018
TY


mceravolo

  • Sr. Member
  • ****
  • Posts: 349
Reply #3 on: Aug 13, 2018
You're welcome


« previous next »
 

Did you know?

Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

Did you know?

In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.

Did you know?

In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.

Did you know?

GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.

Did you know?

The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.

Mammals posses a number of physiological pathways related to stress. One example is the hypothalamic Mammals posses a number of physiological pathways related to stress. One example is the hypothalamic
Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ... Number and label designations for oxygen sensors. Bank 1 is the bank where cylinder number 1 is ...
Reduction of a ribonucleoside diphosphate by rNDP reductase Reduction of a ribonucleoside diphosphate by rNDP reductase
Atomic Number and Mass Number Atomic Number and Mass Number
The Haploid Number of Chromosomes for a Variety of Organisms The Haploid Number of Chromosomes for a Variety of Organisms
Number line for rounding Number line for rounding
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library