To Train for the Running of a Triathlon, Jerri Jogs

question 90

Multiple Choice

To train for the running of a triathlon, Jerri jogs 1 hour each day over the same 8-mile course. Six miles of the course is downhill, whereas the other 2 miles is on level ground. Jerri figures that she runs 3 miles per hour faster downhill than she runs on level ground. Find the rate at which Jerri runs on level ground.

• A)5 mph
• B)6 mph
• C)21 mph
• D)18 mph
• E)7 mph

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Definitions:

Longitudinal Study

A longitudinal study is a research method that involves observing the same subjects over a period of time, sometimes spanning years or decades, to track changes or developments.

Age-Related Differences

Variations in cognitive, psychological, and physical aspects of individuals that can be attributed primarily to the aging process, affecting behaviors and capabilities.

Cross-Sectional Design

A research method that studies different population groups at a single point in time for comparative purposes.

Cohort Design

A study design in which a group of individuals sharing a defining characteristic (e.g., birth year) is followed over time to study outcomes of interest.