A parachutist falls vertically to the ground. A drone that stands completely still in the air has a horizontal constant distance of 200 meters to the path of the parachutist (see figur ). The camera of the drone always follows the parachutist by changing the camera angle 0. As the parachutist passes the height of the drone (point P in the figure), the angle 0 is reduced by 0.025 radians per second. How fast does the parachutist descend at this point? y X = 200

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.