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

question 30

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

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Definitions:

"Over the Top"

A phrase originally used in World War I to describe an infantry attack that went out of the protection of trenches into no-man's land, often used metaphorically to denote an excessive action.

Middle-Class Volunteers

Individuals from the middle-income group who offer their service for a cause or organization without monetary compensation.

Economic Ties

The connections between countries or organizations based on trade, investment, and other financial activities.

Democratic System

A form of government in which power resides with the people, who participate directly or through elected representatives in decision-making.