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Author Question: When using the subtractive method, experimental manipulations are used to a. alter the quality of ... (Read 46 times)

DelorasTo

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on: Jun 19, 2018
When using the subtractive method, experimental manipulations are used to
 
  a. alter the quality of stages involved in a task.
  b. alter the duration of stages.
  c. alter the error rates.
  d. add or delete stages.

Question 2

Last year, the state increased the speed limit on one section of highway from 55 to 65 mph. To evaluate the effect of the change, a researcher gathered accident reports for six months before the change and for six months after the change. This is an example of a(n) ____.
 
  a. time-series design
 b. interrupted time-series design
  c. cross-sectional design
 d. longitudinal design


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ktidd

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Reply #1 on: Jun 19, 2018
Answer to Question 1

D

Answer to Question 2

b


DelorasTo

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Reply 2 on: Jun 19, 2018
Great answer, keep it coming :)

sarah_brady415

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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