The number of student more passed the retake, when the students need a 65 in order to pass the test is 8.
<h3>What is box and whiskers plot?</h3>
Box plot is the way of representation of data which gives the graphical image of the data set to understand better. In this the data is represented with the help of quartile.
- A.The difference in the median grade-
The median of first test is 60 while the second test is 80. Thus, the difference is,

- B. Compare the percent of students who got at least a 60 on the original test to those that got at least a 60 on the retake.
The student, who got at least 60 in first test, falls in the second half of the plot. Thus, the 50% of students got atleast 60% marks. In the retake test, all 100% student got at least 60 on test.
- C. If the students need a 65 in order to pass the test, how many more passed the retake?
In the first test 1/4 are passed while in second test 3/4 students are passed and got the marks 65 or more than this, Thus the number of student pass more in this test,

Thus, the number of student more passed the retake, when the students need a 65 in order to pass the test is 8.
Learn more about the box and whiskers plot here;
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The confounding variable which is controlled by randomly assigning individuals to treatments is: C. the time of day participants drank the beverages.
<h3>What is a
confounding variable?</h3>
A confounding variable is also referred to as a confounder and it can be defined as a type of variable that has the ability to influence both the independent and dependent variables.
Also, a confounding variable is usually not accounted for by the researcher and as such it can cause a spurious association between the independent and dependent variables.
In this context, we can infer and logically deduce that the time of day at which participants drank the beverages is a confounding variable which is controlled by randomly assigning individuals to treatments.
Read more on confounding variable here: brainly.com/question/10863424
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Answer: option B
Step-by-step explanation:
The circumference of a circle can be calculated with this formula:

Where "C" is the circumference of the circle and "r" is the radius of the circle.
The area of a circle can be calculated with:

Where "r" is the radius.
Knowing the area, you can solve for the radius:

Substituting into
, you get that the circumference of this circle is:

The main goal was to keep immigration out of the united states. hope this helps and btw im chris