a double-blind experiment was carried out to investigate the effect of the stimulation caffeine on performance on simple physical task. Thirty male college student were trained in finger tapping. they were then decided at random into three groups of ten and the (0,100mg and 200mg) two hours after treatment, each man was required to do finger tapping and the number of taps per minute was recorded. Find the range, average deviation, variance and standard deviation of each dose. Does caffeine affect the performance on this tasks.​ help please

This is the answer of your question

W= fd
where f is an applied force and d is the distance over which it is applied. when a parachuting skydiver is at constant velocity, he is experiencing "terminal velocity", the point at which his acceleration down is canceled out by air resistance. that means that the resisting force of the air is equal to his weight, but in the opposite direction. with this, we can solve for the work done by the force.
w = fd
w = (92.0)(9.81 m/s^2) (325)
w= 2.93 x 10^5 j
the value for work in this case is positive because it is pushing up on the skydiver, who has a downward force of gravity.
therefore the answer is 2.93 x 10^5 j