Kumar Wants to Do Research Using a Survey About Attitudes

question 5

Multiple Choice

Kumar wants to do research using a survey about attitudes toward smoking.Kumar wants his sampling of respondents to be as representative as possible of the adult Ohio population.Kumar should ____.

• A) randomly pick names from the latest Ohio census
• B) take every thousandth name from phone books all over the state
• C) survey all passersby in downtown areas of communities all over the state
• D) put ads on TV stations around the state asking for volunteers

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Definitions:

Sample Data

A subset of a population used to estimate or make inferences about the entire population.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, commonly set thresholds include 0.05, 0.01.

Random Sample

A subset of individuals chosen from a larger set, where each individual has an equal chance of being selected.

Confidence Interval

A range of values derived from sample data that is likely to contain the value of an unknown population parameter, with a certain level of confidence.