A Survey Asked People "On What Percent of Days Do

question 46

Multiple Choice

A survey asked people "On what percent of days do you get more than 30 minutes of vigorous
Exercise?" Using their responses we want to estimate the difference in exercise frequency between
Men and women. We should use a

• A) matched pairs t-interval
• B) 1-proportion z-interval
• C) 2-sample t-interval
• D) 1-sample t-interval
• E) 2-proportion z-interval

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Definitions:

Variables

Elements, factors, or conditions that can change or vary within an experiment, potentially impacting the outcome.

Laboratory Experiments

Controlled tests or investigations conducted in a specialized environment where variables can be manipulated and outcomes measured precisely.

Partial Correlation

The correlation between two variables with the influence of a third variable statistically controlled for.

Statistically Controlling

This refers to the use of statistical techniques to control for or adjust the effect of confounding variables in research, ensuring a more accurate understanding of relationships.