Author Question: The definition of a hypothesis as an educated guess is ___________. a. not sufficient. b. a good ... (Read 219 times)

Pineapplelove6 · **on:** Jul 13, 2018

The definition of a hypothesis as an educated guess is ___________.

a. not sufficient.
b. a good working definition.
c. not a popular definition.
d. none of the above.

Question 2

Dr. Evans was surprised that many of his participants scored much lower than expected on his pretest. When he observed a significant increase in scores on the posttest, he was cautious in attributing the effect to his treatment alone.

Which of the following threats to internal validity was Dr. Evans concerned about?
a) instrumentation
b) selection
c) regression
d) testing