Answer:
Step-by-step explanation:
So, you basically want the equation of the circle.
Given:
Center(C):
The equation of circle is:
Where, represents the center point and
is the radius of the circle.
Plotting the values in the equation:
This is the equation of the circle of center (5, 2) and radius 3.
Answer:
Modification has not reduced the number of accidents.
Step-by-step explanation:
A B C D E F G H
Before modification 5 7 6 4 8 9 8 10
After modification 3 7 7 0 4 6 8 2
Difference -2 0 1 -4 -4 -3 0 -8
Mean of differences
Standard deviation of differences =
Formula of paired t test :
Df = n-1 = 8-1 =7
t critical> t calculated
So, We failed to reject null hypothesis
Hence modification has not reduced the number of accidents.