Author Question: Which of the following threatens the internal validity of an experiment? a. using more than one ... (Read 88 times)

geodog55 · **on:** Jun 22, 2018

Which of the following threatens the internal validity of an experiment?

a. using more than one dependent variable
b. failing to use a representative sample
c. using an independent variable with more than one level
d. failing to assign participants randomly to conditions

Question 2

An experimenter finds out that the p-value in his study is 3 in 100. What does this mean?

a. His results have a 3 percent chance of being valid.
b. He has a 3 percent chance of finding these results by chance alone.
c. He has a 3 percent chance that his hypothesis is correct.
d. He has a 30 percent chance that his study had good internal validity.