The box and whiskers plot represents the results of the same math test being given to two different classes. According to the bo
x
plot, which statement is true?
A) Both classes have a range of 45
B) Both classes have a median of 85
C) Both classes have a median of 100
D) Approximately 1/4 of second period students scored an 85 or above
plot, which statement is true?
A) Both classes have a range of 45
B) Both classes have a median of 85
C) Both classes have a median of 100
D) Approximately 1/4 of second period students scored an 85 or above
2 answers:
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Answer:
(B) Decrease by 12.5%
Step-by-step explanation:
For this case we know that the revolution is proportional to the circumference.
And we know that the average number of revolutions of 32 inch tires for Tuesday is higher than the original value of 28 inch tires for Monday.
We know that we have x mi/hr, so we can select a value fo x in order to find the average revolutions with the following formula:
Let's say that we select a value for x for example x= 28*32 = 896, since this value is divisible by 32 and 28.
If we find the average revolutions per each case we got:
Tuesday:
Monday:
And then we can find the % of change like this:
And if we replace we got:
Because we are assuming that the initial amount is the value for Monday and the final value for Tuesday.
So then the best answer for this case would be:
(B) Decrease by 12.5%