Acoach wants to see if drinking water during a race improves times. to test this, he has his runners run around a track for 10 miles each practice, and lets half of them drink during the run, and half do not, varying the halves each day, for a 2 week period. this is an example of what kind of statistical study?

1.experiment
2.observational study
3.survey

1. Experiment

Step-by-step explanation:

Here a coach wants to see if drinking water during a race improves times. To test this, he has his runners run around a track for 10 miles each practice, and lets half of them drink during the run, and half do not, varying the halves each day, for a 2 week period.

Hence, this is an example of an experiment .

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.