Answer:
In studies about new medicines, researchers usually give one group of patients the medicine that is designed to treat an illness. They give another group of patients a placebo, which is taken the same way as the medicine but does not actually contain the ingredients of any medicine. Different medicines are tested in different experiments, but the placebos usually contain the same non-medical ingredients. If both groups of patients are healed, then researchers cannot be sure whether the medicine caused improvement, but if the group given the medicine is healed while the group given the placebo remains ill, researchers can conclude that the medicine causes the illness to go away.
In medical experiments, which group receives placebos?
the experimental group
the control group
both the experimental and control groups
neither the experimental nor control group
Explanation:
A linear regression model is used to show the relationship between variables on a scatter plot
The equation of the linear regression model is:
and the correlation coefficient is 0.8034
<h3>How to determine the equation of the
linear regression</h3>
The question is incomplete. So, I will make use of a dataset that has the following calculation summary (from a graphing calculator)
- Sum of X = 45
- Sum of Y = 83
- Mean X = 4.5
- Mean Y = 8.3
- Sum of squares (SSX) = 82.5
- Sum of products (SP) = 128.5
- The value of R is 0.8034.
The equation of the linear regression model is:

See attachment for the scatter plot
Read more about linear regression model at:
brainly.com/question/26347582
Answer:
The algorithm is as follows:
1. Start
2. bottles = 0
3. While bottles != 500
3.1 Create bottle
3.2 bottle = bottle + 1
4. Switch off machine
5. Stop
<em>See attachment for flowchart</em>
Explanation:
This begins the algorithm
1. Start
This initializes bottles to 0
2. bottles = 0
The loop is repeated until 500 bottles is created
3. While bottles != 500
This creates a new bottle
3.1 Create bottle
This increments the number of bottles by 1
3.2 bottle = bottle + 1
This switches of the machine after all bottles are created
4. Switch off machine
End algorithm
5. Stop
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Select row for "ExpirationDate", click the mouse and drag the field until the blue line appears above "Scent," and release the mouse button.