Suppose a Survey Is Taken of Two Groups of People

question 96

Multiple Choice

Suppose a survey is taken of two groups of people where each person is asked a yes/no question and the proportion of people who answer yes is calculated for each group. Which of the following is true about a hypothesis test of the difference in the two proportions?

• A) Normality can be assumed if the sample size for each population is at least 30.
• B) The t-distribution should be used if the standard deviations are unknown.
• C) The standard deviation must be assumed equal.
• D) Normality can be assumed if, in each group, at least 5 people say yes, and at 5 people say no.

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Definitions:

Real Attitude Change

Real attitude change refers to a genuine shift in a person's beliefs, feelings, or positions on a particular issue, resulting from persuasion, new information, or reevaluation of existing information.

Counterinfluence

Methods or strategies used to combat or reduce the effect of influence attempts by others.

Assertiveness

The quality of being self-assured and confident without being aggressive, in order to express one's opinions and needs directly.

Determination

A quality of persistently pursuing one's goals despite challenges.