According to published reports, practice under fatigued conditions distorts mechanisms that govern performance. An experiment was conducted using 15 college males, who were trained to make a continuous horizontal right-to-left arm movement from a microswitch to a barrier, knocking over the barrier coincident with the arrival of a clock sweephand to the 6 o’clock position. The absolute value of the difference between the time, in milliseconds, that it took to knock over the barrier and the time for the sweephand to reach the 6 o’clock position (500 msec) was recorded. Each participant performed the task five times under prefatigue and postfatigue conditions, and the sums of the absolute differences for the five performances were recorded. An increase in the mean absolute time difference when the task is performed under postfatigue conditions would support the claim that practice under fatigued conditions distorts mechanisms that govern performance. Assuming the populations to be normally distributed,test this claim. Determine t calculated.
According to published reports, practice under fatigued conditions distorts mechanisms that govern
performance. An experiment was conducted using 15 college males, who were trained to make a continuous
horizontal right-to-left arm movement from a microswitch to a barrier, knocking over the barrier coincident
with the arrival of a clock sweephand to the 6 o’clock position. The absolute value of the difference
between the time, in milliseconds, that it took to knock over the barrier and the time for the sweephand
to reach the 6 o’clock position (500 msec) was recorded. Each participant performed the task five times under
prefatigue and postfatigue conditions, and the sums of the absolute differences for the five performances were
recorded.
An increase in the mean absolute time difference when the task is performed under postfatigue conditions
would support the claim that practice under fatigued conditions distorts mechanisms that govern performance.
Assuming the populations to be
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