A researcher wants to determine if college basketball players score more points if they run every day.

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A researcher wants to determine if college basketball players score more points if they run every day. To find out, she surveys players on one college team and finds out that a greater proportion of those who run every day score over 10 points than those that don’t run every day. The researcher advises coaches across the country to have their players run every day.
a. Describe the problems with the researcher’s study. Include in your description at least one possible lurking or confounding variable.
b. Redesign the study so that it is a well-designed experiment.
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