Read the following experiment and answer the questions

Mary had observed that bean plants seemingly grew taller when Ferilizer A was applied. She decided to conduct an experiment with bean plants to determine which type of fertilizer would produce the tallest bean plants in a 90 day period. She selected three containers of the same exact size and placed the same amount of potting soil in each container. She placed 100 bean seeds in each container. She placed all three containers on the covered back porch. She added FERTILIZER A to one container and FERTILIZER B to another container. SHE DID NOT FERLIZE THE PLANTS in the third container. She watered the three containers of plants every other day for 90 days. She watered with the same amount of water and distributed the water evenly in each of the three containers. At the end of 90 days, the container of plants receiving FERTILIZER A produced plants with an average plant height of 117 inches. FERTILIZER B plants averaged 12 inches, and the container receiving no fertilizer averaged 10 inches in height.


Name the independent variable.
Name the levels of the independent variable.
Name the dependent variable.
Name the control.
List the constants.
Formulate a hypothesis.
State the numer of repeated trials or repetitions.
State the outcome of the experiment.
Was the hypothesis correct?
Was this experiment controlled? Explain the rationale for your response.