DrBauer Is Investigating the Effects of a New Drug on the Capacity

Multiple Choice

Dr.Bauer is investigating the effects of a new drug on the capacity of short-term memory.To do this,he uses four doses of drug on different groups of patients: some take a high dose,others a medium dose,others a low dose,and finally some take a placebo sugar pill.He then measures each participant's short-term memory capacity by seeing how many words they can remember immediately after hearing a list of 50 words.What statistic would Dr.Bauer use to determine if there was a significant difference between groups?

A) correlation coefficient
B) t-test
C) analysis of variance
D) standard deviation