Dr Hakim Has Tested a New Antipsychotic Medication

Multiple Choice

Dr. Hakim has tested a new antipsychotic medication. He followed all the procedures to be sure his data are valid. He uses inferential statistics to see if his results are statistically significant, and he learns that they are in fact significant at the .05 level. This means that the results could have occurred by chance alone only __________ of the time.

A) 5 percent
B) 10 percent
C) 50 percent
D) 99 percent