The correct argument for using a two-tailed test, even if there is a clear basis for predicting a result in a given direction, is that
A) if the null hypothesis is in fact true, rejecting it will provide stronger evidence in support of it.
B) one-tailed tests cannot be used in most studies involving one or two groups.
C) if an unexpected result that is opposite of what is predicted occurs, it does not have to be ignored.
D) a two-tailed test improves the chance of getting a statistically significant result.
C
You might also like to view...
A baby learns that when he is hungry, food is provided, and when he is in pain, he is cuddled and comforted. Erik Erikson suggested that this baby would be developing a sense of ________
a. intimacy. b. trust. c. integrity. d. identity.
Which of the following is NOT involved in the use of extinction?
a. eliminating the reinforcer that is maintaining the behavior b. implementing punishment to decrease the behavior c. identifying the reinforcer that is maintaining the behavior d. data collection in all relevant situations