*make up your own data* Echinaccea is a plant that grows flowwers with pink peta

Question

*make up your own data*

Echinaccea is a plant that grows flowwers with pink petals, which surround a large orange center. Extracts from the plant are said to support or enhance the human immune system.

Does tea, which has been brewed using the extracts of Echinaccea, reduce the duration of cold symptoms?

1. What is the independent variable? explain why

2. dependent variable? explain why

3.control group? explain why

4. what are the controlled variables? how do they differ from the independent variables?

5. Formulate a null hypothesis for the experiment.

6. Formulate an alternative hypothesis for the experiment.

7. If you were to actually run this experiment, how wouldyou determine growth in a plant? (would you be able to have numerical data that would help you decide if there was any change in growth?)

Explanation / Answer

1. What is the independent variable? explain why The independent variable is the Echinaccea because it is known to reduce cold symptoms 2. dependent variable? explain why The dependent variable is the amount of echinaccea put into the brewed tea because this will tell the investigator the amount needed in tea to enhance the immune system. 3. Control group? explain why Tea without echinaccea. This is the control group because we know that it will have no effect on cold symptoms and elevated immune system function. 4. What are the controlled variables? how do they differ from the independent variables? The controlled variable would be the solvent; the tea. It is different than the IV in that it is simply the delivery system for the echniccea. 5. Formulate a null hypothesis for the experiment. Echinaccea in tea does not enhance the immune system or relieve the duration of cold symptoms. 6. Formulate an alternative hypothesis for the experiment. Echinaccea in tea enhances the immune system and relieves the duration of cold symptoms. 7. If you were to actually run this experiment, how would you determine growth in a plant? (would you be able to have numerical data that would help you decide if there was any change in growth?) If you were to run an experiment about the growth of the plant, you would pick the same time every day, over a two month period, to measure the height of the plant. Measurements would supply numerical data that could either support or deny increased or decreased growth in a plant.

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