In a study on the effects of a new type of soft lighting on task ...

[Caiter2013]

In a study on the effects of a new type of soft lighting on task efficiency using two groups of office workers as the participants, a researcher mistakenly concludes that using the new lighting does improve task efficiency when, in fact, it does NOT.
 
  What type of error has the researcher committed?
 
  A) A Type I error
  B) A Type III error
  C) A Type II error
  D) A measurement error

Question 2

In a study on the effects of a new type of soft lighting on task efficiency using two groups of office workers as the participants, a researcher mistakenly concludes that the use of the new lighting does NOT improve task efficiency when, in fact, it does.
 
  What type of error has the researcher made?
 
  A) A Type I error
  B) A Type II error
  C) A beta error
  D) An alpha error

[momo1250]

Answer to Question 1

Answer: A

Answer to Question 2

Answer: B

[Caiter2013]

Gracias!

[ryhom]

Thanks for the timely response, appreciate it