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Regression slope intervals

Desiree is interested in the relationship between caffeine consumption and hours spent studying at her university. She randomly selects 2020 students at her school and records their caffeine intake (mg) and the amount of time spent studying in a given week. Desiree wants to perform a least-squares analysis to predict time spent studying from caffeine consumption.
In the context of this setting, which of the following is true about the slope β\beta of the population regression line?
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Choose 1 answer: