Author Question: Which of the following is an advantage of LED lights over incandescent lights? a. they use more ... (Read 25 times)

appyboo

  • Hero Member
  • *****
  • Posts: 527
Which of the following is an advantage of LED lights over incandescent lights?
 
  a. they use more electricity than incandescent lights for the same light output
  b. they generate very little heat, so they can be housed in plastic rather than metal
  c. they can produce both directional and nondirectional light beams
  d. they can run on both batteries and electric current
  e. they don't require color temperature adjustment

Question 2

There are five major limitations to all ratings methodologies as presently utilized. Which of the following is NOT a limitation of ratings in general?
 
  a. Omitting bars, hospitals, and other public viewing locations from the sample
  b. Unknown representativeness as a result of low cooperation rates
  c. Having standard error because rating samples are drawn from the general population
  d. Lack of agreement on what viewing or listening is, leading to some counting oddities
  e. Weighting subsets of respondents so that the sample matches the general population



aburgess

  • Sr. Member
  • ****
  • Posts: 361
Answer to Question 1

b

Answer to Question 2

c



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Did you know?

Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.

Did you know?

There are 60,000 miles of blood vessels in every adult human.

For a complete list of videos, visit our video library