A Sample of 250 People Resulted in a Confidence Interval

question 145

Multiple Choice

A sample of 250 people resulted in a confidence interval estimate for the proportion of people who believe that the federal government's proposed tax increase is justified is between 0.14 and 0.20. Based on this information, what was the confidence level used in this estimation?

• A) Approximately 1.59
• B) 95 percent
• C) Approximately 79 percent
• D) Can't be determined without knowing σ.

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Definitions:

Thoughtful Consideration

entails careful and attentive deliberation or reflection before making a decision or forming an opinion.

Gender Role

Societal norms dictating the behaviors, attitudes, and activities deemed appropriate for men and women.

Parental Monitoring

Parents’ ongoing awareness of what their children are doing, where, and with whom.

Authoritarian Parenting

An approach to child rearing that is characterized by high behavioral standards, strict punishment of misconduct, and little communication from child to parent.