In addition to the assumptions that must be satisfied to use the independent samples t-test, there is also a third assumption regarding the variability in the two populations, what is it?
A. homogeneity of variances
B. assumption of non-normality
C. assumption of normality
D. assumption of distribution
Answer: A
You might also like to view...
Although the improvement is only moderate, relaxation techniques have been shown to have a positive effect on a. headaches
b. hypertension (high blood pressure). c. pain. d. all of these
One way to increase statistical power is to _____
a. lower alpha from .05 to .01 c. take two measures from every subject b. increase the number of observations d. do all of these
Since it was first published, the DSM has
a. become more objective. b. decreased in size. c. abandoned attempts to operationalize diagnosis. d. removed procedures originally employed to differentiate between psychological and biological causal factors.
Three-month-old Winston will probably listen longer to ________ than to ________
A) pure tones; voices B) pure tones; noises C) human speech; nonspeech sounds D) a foreign language; his native language