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Sagot :
Answer:
A, D,
A.) He decides to give all male athletes Gatorade and the female athletes eitherPowerade or Vitaminwater.
D.) He has some of the athletes drink the sports drink two hours beforerunning,others one hour before running, and the rest 30 minutes beforerunning.
Step-by-step explanation:
Confounding variables could be described as variables which introduces elements that causes unwanted relationship between measured variables in data. Such that observed relationship is actually not as a result of the independent variable.
The confounding variables in the options chosen are gender and timing of the consumption and when the athletes eventually ran.
As for gender, male athletes are expected to put up a better running speed and energy than women and Hence would finish the rate faster based on these fact. Hence, it will be wrong to conclude that Gatorade has Better effect on performance.
As for timing, those who run shortly after taking an energy drink are more likely to be boosted that those who take much later and this the effect may not necessarily be in the type of energy drink consumed.
Confounding variables are the variables which are not related to the experiment.
- Gender would be confounded with sports drink since we cannot distinguish their effects from each other.
- Sports drink would be confounded with timing of the drink, since we could not distinguish their effects from each other.
What is confounding variable?
Confounding variables are the variables which are not related to the experiment. Confounding variables provides the affects the useless results and affects the experiment.
Given information-
The total number of meters the athletes runs is 400 meters.
The sports drink given to athletes are Powerade, Gatorade and Vitamin water.
The given options are,
- a) He decides to give all male athletes Gatorade and the female athletes either Powerade or Vitaminwater- As the male atheletes likely have more power and energy to run than the female athletes. Thus this can ruin the experiment.
- b) Yes gender would be confounded with sports drink since we cannot distinguish their effects from each other.
- c) He allows each athlete to choose their favorite drink from a cooler- To choose favorite drink does not affect the experiment.
- d. He has some of the athletes drink the sports drink two hours before running, others one hour before running, and the rest 30 minutes before running- The athletes who have taken drink just before the race, have more energy. Thus it is a confounding variable.
- e. He has some of the athletes drink Gatorade two hours before running, others drink Powerade one hour before running, and the rest Vitamin water half an hour before running-similar effect as the in the above case with the timing for this option.
- f). Yes sports drink would be confounded with timing of the drink, since we could not distinguish their effects from each other.
Hence,
- Gender would be confounded with sports drink since we cannot distinguish their effects from each other.
- Sports drink would be confounded with timing of the drink, since we could not distinguish their effects from each other.
learn more about the confounding variable here;
https://brainly.com/question/10458420
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