Answer:
introducing tax cuts to stimulate the economy
Answer: Observational Study
Explanation: An experiment requires a scientist to observe subjects of the study under specific conditions where an independent variable is involved and controlled by the scientist.
An observational study on the other hand is in an uncontrolled environment and the scientist does not have any control on the variables. An example is polls. The purpose of this type of study is to get statistical values without interfering with the the subjects of the study.
I would have to say the answer is C. There were no slaves, Chicago's climate can get cold, and they are all cities (not a lot of farmland), but they are all on waterways.
Answer:
The set of pepper plants in the fourth box are the control group
Explanation:
The aim of the experiment is to determine the plant fertilizer that will give the most pepper yield
The number of types of fertilizers used under the study = 3 brands
The number of boxes set up for the experiment = 4 boxes
The number of pepper plants planted in each box = 3 sets
The fertilizers applied to each box = One different type for each of the first three box
The type of fertilizer applied to the fourth box = No fertilizer
The control group is the group to which the effect of the other groups subject to the experimental treatment are compared, and the group not subject to the treatment of the experiment.
Therefore;
The set of pepper plants in the fourth box are the control group.
